Which HTML5 element indicates the main content region of a document and should be unique per page?

Which HTML5 element indicates the main content region of a document and should be unique per page?

• A. Section
• B. Header
• C. Article
• D. Main

Answer: (D)

HTML5 landmarks organize a page into regions to help navigation, especially for assistive tech. The element that marks the central, unique content of a document is the one designed to wrap the main portion of the page—the part users come to read or interact with first. It’s intended to appear only once per page, giving a reliable anchor that signals where the primary information lives after headers, navigation, and side content. Why this is the best fit: the main element specifically designates the primary content region for the entire page, making it easier for browsers and screen readers to jump straight to the core material. Other options describe different kinds of blocks: a section is a thematically grouped block that can repeat many times; a header holds introductory content for a page or section and can appear multiple times; an article is a self-contained piece that could stand alone and be syndicated. None of these are required to be unique or to represent the page’s central content, so they don’t serve the same role as the main element.

HTML5 landmarks organize a page into regions to help navigation, especially for assistive tech. The element that marks the central, unique content of a document is the one designed to wrap the main portion of the page—the part users come to read or interact with first. It’s intended to appear only once per page, giving a reliable anchor that signals where the primary information lives after headers, navigation, and side content.

Why this is the best fit: the main element specifically designates the primary content region for the entire page, making it easier for browsers and screen readers to jump straight to the core material. Other options describe different kinds of blocks: a section is a thematically grouped block that can repeat many times; a header holds introductory content for a page or section and can appear multiple times; an article is a self-contained piece that could stand alone and be syndicated. None of these are required to be unique or to represent the page’s central content, so they don’t serve the same role as the main element.