"Triage" is the phase in the bug life cycle where bugs are prioritized based on factors like their severity, impact, and the resources available. During this phase, the team decides the urgency and the order in which the bugs should be addressed. Verification is the process of checking if the bug has been fixed, while Reproduction is reproducing the reported bug.

"Defect Age" is a testing metric that measures the period between when a defect is introduced into the code and when it is detected. This metric helps in understanding the efficiency of the testing process over time.

One of the main challenges with automated testing is ensuring that test scripts can be easily maintained over time. As the application evolves, the test scripts need to be updated, making maintenance a pivotal concern for ensuring the relevance of automated tests.

During the "Test Environment Setup" phase of the Software Testing Life Cycle (STLC), the environment required for testing is prepared. This involves setting up the test servers, databases, and other resources. The validation ensures that the environment aligns with the requirements for accurate testing.

Color contrast issues are related to the visibility of text or interface elements against their background, especially for color-blind users. Ensuring a sufficient color contrast ratio can rectify this. Web Content Accessibility Guidelines (WCAG) provides specific standards on contrast ratios to ensure readability and visibility for everyone.

A well-defined test strategy aims at achieving the testing objectives, which usually revolve around ensuring the "Quality" of the software. Quality assurance is pivotal in ensuring the software meets user needs and is defect-free.

Alternative text descriptions are essential for images because they provide a textual description, which screen readers can read out to users who are visually impaired. Without this description, such users won't have context or understanding about the images, which can affect their overall user experience.

Opting to avoid the integration is often the best course when significant risks are identified. While the other options may seem viable, they don't directly address the immediate concern of compatibility issues which can lead to significant defects or project delays.

In Test Control, understanding the risks and their potential impact is vital. As new risks emerge or existing risks change, it might be necessary to revise the test strategy to address these risks effectively. This could involve changing testing priorities, methods, or even the types of tests conducted.

Prioritization strategies are essential for large and complex test suites. They help in determining which tests are crucial and should be run first, especially when there's limited time or resources. This approach ensures that the most critical functionalities are validated first, maximizing defect detection.

"Path Testing" is a type of white-box testing technique where the tester identifies all possible paths between pairs of procedural statements and then tests each path. It ensures that all paths in a unit are tested at least once.

The "big bang" approach differs from typical non-incremental methods in that, in the "big bang" approach, the integration testing is deferred until all individual modules are developed. This could lead to challenges in identifying defects because everything is tested at once.