Why is the library of congress a useful site to search?

it is a subject directory site with links to various categories of information, from art to statistics.
the library of congress is a huge database with full text articles on many subjects.
it is a powerful search engine that allows the user to search "invisible" sites.
the library of congress is a site that uses nesting to allow for more precise searches.

The correct answer is actually (A). I, myself, just took the test.

The correct answer is actually (A). I, myself, just took the test.

It is a subject directory site with links to various categories of information, from art to statistics.

Explanation:

The Library of Congress is a national public library and an important source of information that keeps thousands of materials about a vast variety of subjects.   Its resourceful directory site helps researchers to find a particular subject in its categories.

The Library of Congress is a reliable and trustworthy place for research, and its resources have been used by important scientists and researchers. It is also the official national library of the U.S.

It is a subject directory site with links to various categories of information, from art to statistics.

Explanation:

The Library of Congress is a national public library and an important source of information that keeps thousands of materials about a vast variety of subjects.   Its resourceful directory site helps researchers to find a particular subject in its categories.

The Library of Congress is a reliable and trustworthy place for research, and its resources have been used by important scientists and researchers. It is also the official national library of the U.S.