What is one key feature of HTML that enhances accessibility for documents?

One key feature of HTML that significantly enhances accessibility for documents is its structure and semantic meaning. HTML elements like headings, paragraphs, lists, and links have specific roles and provide context to the content within a webpage. This semantic aspect allows assistive technologies, such as screen readers, to interpret and convey the structure and hierarchy of information to users with disabilities.

For instance, by using proper heading tags (e.g., H1, H2) to delineate sections of content, users can easily navigate through the document, understanding where one topic ends and another begins. Additionally, semantic HTML improves search engine optimization and helps all users understand the content better by reinforcing its meaning.

The other options, while important in their own right, do not directly address how they enhance accessibility in the same way. Support for multimedia can be useful, but it requires additional considerations for accessibility such as captions or transcripts. The ability to style documents impacts design and layout but does not inherently provide information about the content itself. Compatibility with all browsers ensures that documents can be viewed universally but does not affect the structural understanding by assistive technologies. Thus, the correct focus on structure and semantic meaning in HTML is essential for improving accessibility.