What is noted about the other techniques related to WCAG?

The correct answer highlights that some techniques related to the Web Content Accessibility Guidelines (WCAG) may not be included in the official published list by the World Wide Web Consortium (W3C). This is significant because it recognizes that while the WCAG provides a foundational set of guidelines aimed at making web content more accessible, there are additional techniques and best practices that may not be formally recognized or documented by the W3C but can still be valuable in implementing accessibility.

This acknowledgment opens up the understanding that accessibility is an evolving field and that additional resources or methodologies may be discovered or developed over time. It encourages practitioners to be proactive in seeking out complementary techniques that improve accessibility beyond the official guidelines.

In considering the other options, the statement regarding comprehensiveness and coverage of all technologies is misleading, as few techniques can address every technology due to the diverse nature of web development. The idea that these techniques are the main methods for achieving compliance is not entirely accurate since compliance often requires a combination of multiple methods. Lastly, the assertion that techniques must be strictly followed without deviation contradicts the flexible nature of apply techniques tailored to specific contexts and user needs.