What is the purpose of the <iframe> tag in HTML?To embed external content within a webpageTo create a pop-up windowTo display imagesTo create interactive forms

The purpose of the <iframe> tag in HTML is to embed external content within a webpage. This could be any content, such as a video from YouTube, a map from Google Maps, or even another webpage. This allows you to include and load content from another site without the user having to leave your page.

Here's a step-by-step explanation:

1. The <iframe> tag is a container that you can use in your HTML code.

2. You specify the source of the content you want to embed with the "src" attribute. For example, if you wanted to embed a YouTube video, you would get the embed link from YouTube and put it in the "src" attribute.

3. The browser will then load the content from the source you specified into the iframe when it loads the webpage.

4. The user can interact with the embedded content just like they would if they were on the original site. For example, they can play and pause a YouTube video, zoom in and out of a Google Map, etc.

5. The <iframe> tag has other attributes you can use to control its appearance and behavior, such as "width" and "height" to specify its size, and "frameborder" to specify whether it should have a border.

Note: The <iframe> tag does not create a pop-up window, display images, or create interactive forms. There are other HTML elements and techniques for those purposes.