Which HTML element defines a container for embedding an external application?

Which HTML element defines a container for embedding an external application?

• A. iframe
• B. embed
• C. object
• D. video

Answer: (B)

Embedding external content inside a page is best done with a tag that provides a separate, contained browsing context for another document. The iframe element creates exactly that: a window inside your page that loads and displays an external HTML page or application. Using it is straightforward: you point to the external resource with the src attribute, and you can control its size and other properties. For example, an inline frame can load a different site or app within a defined area on your page. The other options serve different purposes. The embed element is for bringing in external resources like plugins or media in a generic way, not specifically as a container for an HTML document. The object element can embed external resources as well, but it’s more complex and browser support varies for different resource types. The video element is dedicated to video playback and isn’t used to embed an arbitrary external application.

Embedding external content inside a page is best done with a tag that provides a separate, contained browsing context for another document. The iframe element creates exactly that: a window inside your page that loads and displays an external HTML page or application. Using it is straightforward: you point to the external resource with the src attribute, and you can control its size and other properties. For example, an inline frame can load a different site or app within a defined area on your page.

The other options serve different purposes. The embed element is for bringing in external resources like plugins or media in a generic way, not specifically as a container for an HTML document. The object element can embed external resources as well, but it’s more complex and browser support varies for different resource types. The video element is dedicated to video playback and isn’t used to embed an arbitrary external application.