Correct Answer - Option 3 : Article
Concept
The <main> tag specifies the main content of a document. The content inside the <main> element should be unique to the document. It should not contain any content that is repeated across documents such as sidebars, navigation links, copyright information, site logos, and search forms.
Main content is the entire article which wraps the <article> element. It holds the page’s main content. It can be useful for screen readers.
The main content area of a page is the part of the page which that is unique to that page (the part that is not shared with other pages). The sidebar is not part of the main content area because its contents are typically shared among other pages. A typical page might include some text and photos and callout objects
E.g. <main> <article>…………</article> </main>
