You're working on a responsive design where you want a row of items to wrap onto the next line when there isn't enough space. Which Flexbox properties would you adjust?

To make a row of items wrap onto the next line when there isn't enough space in a Flexbox layout, you would adjust the flex-direction property to "column" (for vertical stacking) and flex-wrap to "wrap." This allows the items to stack vertically when space is limited.