In CEH v13 Module 02: Footprinting and Reconnaissance, Google advanced operators are tools for passive information gathering.

related: operator is used to find websites similar to a given domain or webpage.

This helps attackers discover alternate domains, competitors, or similar content that may be vulnerable or poorly secured.

Example:

related:example.com

Will return a list of sites Google deems related to example.com.

Option Clarification:

A. inurl: – Searches for a keyword in the URL.

B. related: – Correct – Finds similar or related websites.

C. info: – Provides Google’s cached and indexed data about a URL.

D. site: – Restricts search to a specific domain or site.