Which tag is used to define a section in a web page?

The tag that is used to define a section in a web page is the

tag. This HTML element is designed to group related content within a web page into distinct sections, thereby helping with both layout and semantic organization.

When using the

tag, it is often accompanied by a heading element (like

,

, etc.) to provide context about the content within that section. This enhances the accessibility of the webpage, as screen readers utilize these headings to navigate through the content more effectively.

While the

tag can also group content, it is a more generic container with no semantic meaning attached, making it less optimal for defining structured sections of a webpage. Similarly, the

tag is intended for self-contained compositions that may stand alone outside of the web page, and the

tag is specifically used for defining introductory content or navigation links related to a particular section. Utilizing the correct sectioning elements is important for creating well-structured, accessible, and search-engine-friendly web documents.