What tag is used to embed an image in an HTML document?

The tag is specifically designed for embedding images in an HTML document. It allows web developers to include visual content by referencing the image source through the "src" attribute. Using this tag, you can also specify the image's alternative text through the "alt" attribute, which is essential for accessibility and helps with SEO.

The tag is used for more complex scenarios where different images may be loaded based on specific conditions, such as differing screen sizes or resolutions, but it is not the primary tag for embedding a single image. The tag does not exist in HTML standards, making it invalid in this context. Similarly, is not a recognized tag in HTML; the correct way to embed an image is solely through the tag.