Which one of the following Google advanced search operators allows an attacker to restrict the results to those websites in the given domain?

The cache: operator retrieves Google's cached snapshot of a specific page, not restricts results by domain.

The site: operator (e.g., site:example.com) instructs Google to return only results from the specified domain. This is a foundational Google hacking technique used during the footprinting phase to enumerate web pages, subdomains, and exposed files within a target domain without directly interacting with the target.

The inurl: operator searches for a keyword within the URL path, not restricts results to a specific domain.

The link: operator finds pages that link to a specified URL, which does not restrict results by domain.