Which HTML tag allows embedding YouTube videos directly into a webpage?

</li> <li><video> </li> </ul> <div class="answer" data-value="3">To embed YouTube videos directly into a webpage, the <iframe> tag is used. YouTube provides an "Embed" option for its videos, which gives you an iframe-based embed code. By copying and pasting this code into your HTML document, you can display the YouTube video within the context of your page. The <iframe> tag is a versatile element that allows embedding of documents, videos, and other inline content from different sources. </div> </div> <div class="discuss"> <a class="btn btn-sm btn-secondary" rel="bookmark" href="/quiz/33119/">Discuss it</a> </div> </div> <div class="card quiz mb-4"> <h1 class="h5 mx-4 mt-3 mb-0 quizid" data-id="33121">How can you group related options in a dropdown list?</h1>  <div class="star d-flex align-items-center"> <svg aria-hidden="true" width="100%" height="100%" viewBox="0 0 70 14" fill="none" xmlns="http://www.w3.org/2000/svg"> <mask id="star-mask-33121"> <rect x="0" y="0" width="30%" height="100%" fill="white"></rect> </mask> <g class="star-filled" mask="url(#star-mask-33121)"> <use xlink:href="#icon-star" width="14" height="14" x="0"></use> <use xlink:href="#icon-star" width="14" height="14" x="14"></use> <use xlink:href="#icon-star" width="14" height="14" x="28"></use> <use xlink:href="#icon-star" width="14" height="14" x="42"></use> <use xlink:href="#icon-star" width="14" height="14" x="56"></use> </g> <g fill="transparent" class="star-bordered" stroke-width="2"> <use xlink:href="#icon-star" width="12" height="12" x="1" y="1"></use> <use xlink:href="#icon-star" width="12" height="12" x="15" y="1"></use> <use xlink:href="#icon-star" width="12" height="12" x="29" y="1"></use> <use xlink:href="#icon-star" width="12" height="12" x="43" y="1"></use> <use xlink:href="#icon-star" width="12" height="12" x="57" y="1"></use> </g> </svg> <span aria-hidden="true" class="visually-hidden">Difficulty level</span> </div> <div class="option"> <ul> <li>Using the <group> tag. </li> <li>Enclosing them in <related> tags. </li> <li>Using the <optgroup> tag. </li> <li>Grouping them under a<br /> <header> tag. </li> </ul> <div class="answer" data-value="3">The <optgroup> element is utilized within a <select> dropdown to group related options together. It's a way to organize options, making them more easily navigable for the user. For example, in a dropdown list of countries, you might use <optgroup> to group countries by continent. </div> </div> <div class="discuss"> <a class="btn btn-sm btn-secondary" rel="bookmark" href="/quiz/33121/">Discuss it</a> </div> </div> <div class="card quiz mb-4"> <h1 class="h5 mx-4 mt-3 mb-0 quizid" data-id="33122">The _____ tag is used to define superscript text.</h1>  <div class="star d-flex align-items-center"> <svg aria-hidden="true" width="100%" height="100%" viewBox="0 0 70 14" fill="none" xmlns="http://www.w3.org/2000/svg"> <mask id="star-mask-33122"> <rect x="0" y="0" width="50%" height="100%" fill="white"></rect> </mask> <g class="star-filled" mask="url(#star-mask-33122)"> <use xlink:href="#icon-star" width="14" height="14" x="0"></use> <use xlink:href="#icon-star" width="14" height="14" x="14"></use> <use xlink:href="#icon-star" width="14" height="14" x="28"></use> <use xlink:href="#icon-star" width="14" height="14" x="42"></use> <use xlink:href="#icon-star" width="14" height="14" x="56"></use> </g> <g fill="transparent" class="star-bordered" stroke-width="2"> <use xlink:href="#icon-star" width="12" height="12" x="1" y="1"></use> <use xlink:href="#icon-star" width="12" height="12" x="15" y="1"></use> <use xlink:href="#icon-star" width="12" height="12" x="29" y="1"></use> <use xlink:href="#icon-star" width="12" height="12" x="43" y="1"></use> <use xlink:href="#icon-star" width="12" height="12" x="57" y="1"></use> </g> </svg> <span aria-hidden="true" class="visually-hidden">Difficulty level</span> </div> <div class="option"> <ul> <li><sup> </li> <li><super> </li> <li><superscript> </li> <li><upper> </li> </ul> <div class="answer" data-value="1">The <sup> tag is used to represent superscript text, which is text that appears half a character's height above the baseline. It's commonly used for footnotes or the exponents in mathematical equations (e.g., E=mc^2 where the "2" is superscripted). </div> </div> <div class="discuss"> <a class="btn btn-sm btn-secondary" rel="bookmark" href="/quiz/33122/">Discuss it</a> </div> </div> <div class="card quiz mb-4"> <h1 class="h5 mx-4 mt-3 mb-0 quizid" data-id="33123">What considerations should be made for access key assignments to avoid conflicts and ensure usability?</h1>  <div class="star d-flex align-items-center"> <svg aria-hidden="true" width="100%" height="100%" viewBox="0 0 70 14" fill="none" xmlns="http://www.w3.org/2000/svg"> <mask id="star-mask-33123"> <rect x="0" y="0" width="90%" height="100%" fill="white"></rect> </mask> <g class="star-filled" mask="url(#star-mask-33123)"> <use xlink:href="#icon-star" width="14" height="14" x="0"></use> <use xlink:href="#icon-star" width="14" height="14" x="14"></use> <use xlink:href="#icon-star" width="14" height="14" x="28"></use> <use xlink:href="#icon-star" width="14" height="14" x="42"></use> <use xlink:href="#icon-star" width="14" height="14" x="56"></use> </g> <g fill="transparent" class="star-bordered" stroke-width="2"> <use xlink:href="#icon-star" width="12" height="12" x="1" y="1"></use> <use xlink:href="#icon-star" width="12" height="12" x="15" y="1"></use> <use xlink:href="#icon-star" width="12" height="12" x="29" y="1"></use> <use xlink:href="#icon-star" width="12" height="12" x="43" y="1"></use> <use xlink:href="#icon-star" width="12" height="12" x="57" y="1"></use> </g> </svg> <span aria-hidden="true" class="visually-hidden">Difficulty level</span> </div> <div class="option"> <ul> <li>Assign keys based on their visual position on the page. </li> <li>Assign keys randomly. </li> <li>Ensure they don't conflict with browser and OS shortcuts. </li> <li>Use the first letter of the element's name. </li> </ul> <div class="answer" data-value="3">Access keys can enhance usability by providing keyboard shortcuts to important web page elements. However, it's critical to ensure that these shortcuts don't conflict with default browser or operating system shortcuts, which can confuse users or render the shortcuts unusable. Also, considering international users who might have different keyboard layouts is important. </div> </div> <div class="discuss"> <a class="btn btn-sm btn-secondary" rel="bookmark" href="/quiz/33123/">Discuss it</a> </div> </div> <div class="card quiz mb-4"> <h1 class="h5 mx-4 mt-3 mb-0 quizid" data-id="33124">Which tag is used to embed images in an HTML document?</h1>  <div class="star d-flex align-items-center"> <svg aria-hidden="true" width="100%" height="100%" viewBox="0 0 70 14" fill="none" xmlns="http://www.w3.org/2000/svg"> <mask id="star-mask-33124"> <rect x="0" y="0" width="16.666666666667%" height="100%" fill="white"></rect> </mask> <g class="star-filled" mask="url(#star-mask-33124)"> <use xlink:href="#icon-star" width="14" height="14" x="0"></use> <use xlink:href="#icon-star" width="14" height="14" x="14"></use> <use xlink:href="#icon-star" width="14" height="14" x="28"></use> <use xlink:href="#icon-star" width="14" height="14" x="42"></use> <use xlink:href="#icon-star" width="14" height="14" x="56"></use> </g> <g fill="transparent" class="star-bordered" stroke-width="2"> <use xlink:href="#icon-star" width="12" height="12" x="1" y="1"></use> <use xlink:href="#icon-star" width="12" height="12" x="15" y="1"></use> <use xlink:href="#icon-star" width="12" height="12" x="29" y="1"></use> <use xlink:href="#icon-star" width="12" height="12" x="43" y="1"></use> <use xlink:href="#icon-star" width="12" height="12" x="57" y="1"></use> </g> </svg> <span aria-hidden="true" class="visually-hidden">Difficulty level</span> </div> <div class="option"> <ul> <li><embed> </li> <li><pic> </li> <li><img> </li> <li><media> </li> </ul> <div class="answer" data-value="3">The <img> tag is used in HTML to embed images. It's an empty (or self-closing) tag, meaning it doesn't have a closing tag. You'll often use attributes like src (to specify the image source) and alt (to provide alternative text) with it. Other options like <embed>, <pic>, and <media> are not standard HTML tags for displaying images. </div> </div> <div class="discuss"> <a class="btn btn-sm btn-secondary" rel="bookmark" href="/quiz/33124/">Discuss it</a> </div> </div> <div class="card quiz mb-4"> <h1 class="h5 mx-4 mt-3 mb-0 quizid" data-id="33126">The ______ CSS property is utilized to control the visibility of an element in the HTML body.</h1>  <div class="star d-flex align-items-center"> <svg aria-hidden="true" width="100%" height="100%" viewBox="0 0 70 14" fill="none" xmlns="http://www.w3.org/2000/svg"> <mask id="star-mask-33126"> <rect x="0" y="0" width="57.142857142857%" height="100%" fill="white"></rect> </mask> <g class="star-filled" mask="url(#star-mask-33126)"> <use xlink:href="#icon-star" width="14" height="14" x="0"></use> <use xlink:href="#icon-star" width="14" height="14" x="14"></use> <use xlink:href="#icon-star" width="14" height="14" x="28"></use> <use xlink:href="#icon-star" width="14" height="14" x="42"></use> <use xlink:href="#icon-star" width="14" height="14" x="56"></use> </g> <g fill="transparent" class="star-bordered" stroke-width="2"> <use xlink:href="#icon-star" width="12" height="12" x="1" y="1"></use> <use xlink:href="#icon-star" width="12" height="12" x="15" y="1"></use> <use xlink:href="#icon-star" width="12" height="12" x="29" y="1"></use> <use xlink:href="#icon-star" width="12" height="12" x="43" y="1"></use> <use xlink:href="#icon-star" width="12" height="12" x="57" y="1"></use> </g> </svg> <span aria-hidden="true" class="visually-hidden">Difficulty level</span> </div> <div class="option"> <ul> <li>background-visibility </li> <li>display </li> <li>opacity </li> <li>visibility </li> </ul> <div class="answer" data-value="4">The visibility CSS property can either hide an element (hidden) or show it (visible). Unlike the display property, which removes the space taken by the element, the visibility property retains the space even if the element is hidden. opacity, on the other hand, can make an element semi-transparent or fully transparent, but it doesn't hide the element in terms of interactivity. </div> </div> <div class="discuss"> <a class="btn btn-sm btn-secondary" rel="bookmark" href="/quiz/33126/">Discuss it</a> </div> </div> <div class="card quiz mb-4"> <h1 class="h5 mx-4 mt-3 mb-0 quizid" data-id="33127">The _____ attribute is used to define a keyboard shortcut to activate or bring focus to an element.</h1>  <div class="star d-flex align-items-center"> <svg aria-hidden="true" width="100%" height="100%" viewBox="0 0 70 14" fill="none" xmlns="http://www.w3.org/2000/svg"> <mask id="star-mask-33127"> <rect x="0" y="0" width="28.571428571429%" height="100%" fill="white"></rect> </mask> <g class="star-filled" mask="url(#star-mask-33127)"> <use xlink:href="#icon-star" width="14" height="14" x="0"></use> <use xlink:href="#icon-star" width="14" height="14" x="14"></use> <use xlink:href="#icon-star" width="14" height="14" x="28"></use> <use xlink:href="#icon-star" width="14" height="14" x="42"></use> <use xlink:href="#icon-star" width="14" height="14" x="56"></use> </g> <g fill="transparent" class="star-bordered" stroke-width="2"> <use xlink:href="#icon-star" width="12" height="12" x="1" y="1"></use> <use xlink:href="#icon-star" width="12" height="12" x="15" y="1"></use> <use xlink:href="#icon-star" width="12" height="12" x="29" y="1"></use> <use xlink:href="#icon-star" width="12" height="12" x="43" y="1"></use> <use xlink:href="#icon-star" width="12" height="12" x="57" y="1"></use> </g> </svg> <span aria-hidden="true" class="visually-hidden">Difficulty level</span> </div> <div class="option"> <ul> <li>accesskey </li> <li>alt </li> <li>href </li> <li>src </li> </ul> <div class="answer" data-value="1">The accesskey attribute specifies a shortcut key to activate/focus an element. It's beneficial for user accessibility, as users can navigate a webpage using the keyboard. However, care should be taken that the assigned access keys do not conflict with existing browser or system shortcuts. </div> </div> <div class="discuss"> <a class="btn btn-sm btn-secondary" rel="bookmark" href="/quiz/33127/">Discuss it</a> </div> </div> <div class="card quiz mb-4"> <h1 class="h5 mx-4 mt-3 mb-0 quizid" data-id="33128">How is a hyperlink inserted within the body section of an HTML document?</h1>  <div class="star d-flex align-items-center"> <svg aria-hidden="true" width="100%" height="100%" viewBox="0 0 70 14" fill="none" xmlns="http://www.w3.org/2000/svg"> <mask id="star-mask-33128"> <rect x="0" y="0" width="12.5%" height="100%" fill="white"></rect> </mask> <g class="star-filled" mask="url(#star-mask-33128)"> <use xlink:href="#icon-star" width="14" height="14" x="0"></use> <use xlink:href="#icon-star" width="14" height="14" x="14"></use> <use xlink:href="#icon-star" width="14" height="14" x="28"></use> <use xlink:href="#icon-star" width="14" height="14" x="42"></use> <use xlink:href="#icon-star" width="14" height="14" x="56"></use> </g> <g fill="transparent" class="star-bordered" stroke-width="2"> <use xlink:href="#icon-star" width="12" height="12" x="1" y="1"></use> <use xlink:href="#icon-star" width="12" height="12" x="15" y="1"></use> <use xlink:href="#icon-star" width="12" height="12" x="29" y="1"></use> <use xlink:href="#icon-star" width="12" height="12" x="43" y="1"></use> <use xlink:href="#icon-star" width="12" height="12" x="57" y="1"></use> </g> </svg> <span aria-hidden="true" class="visually-hidden">Difficulty level</span> </div> <div class="option"> <ul> <li>By adding a URL directly. </li> <li>Using the <hyper> tag. </li> <li>Using the <link> tag. </li> <li>With the <a> tag and href attribute. </li> </ul> <div class="answer" data-value="4">Hyperlinks are created in HTML using the anchor tag, <a>. The href attribute within the <a> tag specifies the link's destination. The content placed between the opening and closing <a> tags defines the clickable text. For instance, <a href="https://www.example.com">Visit Example</a> will produce a clickable link labeled "Visit Example" that directs the user to "www.example.com" when clicked. </div> </div> <div class="discuss"> <a class="btn btn-sm btn-secondary" rel="bookmark" href="/quiz/33128/">Discuss it</a> </div> </div> <div class="card quiz mb-4"> <h1 class="h5 mx-4 mt-3 mb-0 quizid" data-id="33129">____ is a vector image format suitable for scalable graphics in web design.</h1>  <div class="star d-flex align-items-center"> <svg aria-hidden="true" width="100%" height="100%" viewBox="0 0 70 14" fill="none" xmlns="http://www.w3.org/2000/svg"> <mask id="star-mask-33129"> <rect x="0" y="0" width="44.444444444444%" height="100%" fill="white"></rect> </mask> <g class="star-filled" mask="url(#star-mask-33129)"> <use xlink:href="#icon-star" width="14" height="14" x="0"></use> <use xlink:href="#icon-star" width="14" height="14" x="14"></use> <use xlink:href="#icon-star" width="14" height="14" x="28"></use> <use xlink:href="#icon-star" width="14" height="14" x="42"></use> <use xlink:href="#icon-star" width="14" height="14" x="56"></use> </g> <g fill="transparent" class="star-bordered" stroke-width="2"> <use xlink:href="#icon-star" width="12" height="12" x="1" y="1"></use> <use xlink:href="#icon-star" width="12" height="12" x="15" y="1"></use> <use xlink:href="#icon-star" width="12" height="12" x="29" y="1"></use> <use xlink:href="#icon-star" width="12" height="12" x="43" y="1"></use> <use xlink:href="#icon-star" width="12" height="12" x="57" y="1"></use> </g> </svg> <span aria-hidden="true" class="visually-hidden">Difficulty level</span> </div> <div class="option"> <ul> <li>BMP </li> <li>JPEG </li> <li>PNG </li> <li>SVG </li> </ul> <div class="answer" data-value="4">SVG, or Scalable Vector Graphics, is an XML-based vector image format for two-dimensional graphics with support for interactivity and animation. SVG images and their behaviors are defined in XML text files, which means they can be searched, indexed, scripted, and compressed. As a result, SVG is perfect for web graphics that need to be scalable at different sizes. </div> </div> <div class="discuss"> <a class="btn btn-sm btn-secondary" rel="bookmark" href="/quiz/33129/">Discuss it</a> </div> </div> <div class="card quiz mb-4"> <h1 class="h5 mx-4 mt-3 mb-0 quizid" data-id="33130">How can you create a mailto: link that includes multiple recipients?</h1>  <div class="star d-flex align-items-center"> <svg aria-hidden="true" width="100%" height="100%" viewBox="0 0 70 14" fill="none" xmlns="http://www.w3.org/2000/svg"> <mask id="star-mask-33130"> <rect x="0" y="0" width="37.5%" height="100%" fill="white"></rect> </mask> <g class="star-filled" mask="url(#star-mask-33130)"> <use xlink:href="#icon-star" width="14" height="14" x="0"></use> <use xlink:href="#icon-star" width="14" height="14" x="14"></use> <use xlink:href="#icon-star" width="14" height="14" x="28"></use> <use xlink:href="#icon-star" width="14" height="14" x="42"></use> <use xlink:href="#icon-star" width="14" height="14" x="56"></use> </g> <g fill="transparent" class="star-bordered" stroke-width="2"> <use xlink:href="#icon-star" width="12" height="12" x="1" y="1"></use> <use xlink:href="#icon-star" width="12" height="12" x="15" y="1"></use> <use xlink:href="#icon-star" width="12" height="12" x="29" y="1"></use> <use xlink:href="#icon-star" width="12" height="12" x="43" y="1"></use> <use xlink:href="#icon-star" width="12" height="12" x="57" y="1"></use> </g> </svg> <span aria-hidden="true" class="visually-hidden">Difficulty level</span> </div> <div class="option"> <ul> <li>Add multiple mailto: prefixes. </li> <li>Use the & character between email addresses. </li> <li>Use the , character between email addresses. </li> <li>Use the ; character between email addresses. </li> </ul> <div class="answer" data-value="3">The mailto: scheme allows you to create hyperlinks that will open the user's email software ready to send a new email. To include multiple recipients, separate the email addresses with a comma ,. For example: <a href="mailto:example1@email.com,example2@email.com">Email Us</a>. </div> </div> <div class="discuss"> <a class="btn btn-sm btn-secondary" rel="bookmark" href="/quiz/33130/">Discuss it</a> </div> </div> <nav class="my-4" aria-label="Page navigation" role="navigation"><span class="visually-hidden">Page navigation</span><ul class="pagination justify-content-center"><li class="page-item disabled"><span class="page-link">Page 34 of 40</span></li><li class="page-item"><a class="page-link" href="/quizzes/html-quiz/" aria-label="First Page">«<span class="d-none d-lg-inline-block"> First</span></a></li><li class="page-item"><a class="page-link" href="/quizzes/html-quiz/page/33/" aria-label="Previous Page">&lsaquo;<span class="d-none d-lg-inline-block"> Previous</span></a></li><li class="page-item"><a class="page-link" href="/quizzes/html-quiz/page/32/"><span class="visually-hidden">Page </span>32</a></li><li class="page-item"><a class="page-link" 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