What does the related: directive show?

• A. Pages that have similar content and links to the searched page
• B. Pages within the same directory
• C. Terms in the URL
• D. The site's robots.txt

Answer: (A)

The related: operator is a search tool that returns pages Google considers connected to a given page. It bases this on how similar the content is and how pages link to or from the target page. So it’s about finding pages with similar topics and/or pages that are linked to the searched page, not about being in the same directory, nor about terms in the URL, nor about the site’s robots.txt.