Subject guides can provide links to useful sites that search engine ____ are unable to access.
A) annotations
B) spiders
C) ladders
D) trees

Question

Quizplus · Accepted Answer

Search engine spiders are unable to access certain types of content, such as password-protected sites or pages behind a paywall. Subject guides can provide links to these types of sites, making them useful resources for researchers. Annotations, ladders, and trees do not relate to the ability of search engine spiders to access content.

Subject Guides Can Provide Links to Useful Sites That Search