Which of the following is true of the tools used for searching the Web?

A) They cannot use electronic personal agents.
B) They ensure that the data provided is authentic.
C) They do not evaluate the source of information.
D) They cover the entire Web.
E) They cannot be used for secondary research.

Many search engines do not evaluate the source of information and instead provide results based on the relevance of the search terms to the content on various websites. Option A is incorrect because some search engines do utilize personal agents or “bots” to crawl the web and provide relevant results. Option B is incorrect because search engines cannot guarantee the authenticity of all the information they provide. Option D is incorrect because no search engine can fully cover the entire web. Option E is incorrect because search engines are frequently used for secondary research.