Encyclopedias are good for doing research because: A. they all look the same.
B. they have a lot of information that is well organized, so it is easy to
find what you are looking for.
C. you can find out everything there is to know about one topic.
D. you have to go to the library to use them.

B ?

Explanation:

they have a lot of information that is well organized, so it is easy to

find what you are looking for.?

B.

Explanation:

They have information about every topic to a certain extent. They only have the beginning or the Basics of a topic

on my last

the sentence that avoid faulty coordination is:

culture, which is well represented in philadelphia, plays a major role including theatre, music, and the visual arts.  

faulty coordination occurs when the writer gives equal importance two different ideas (clauses) which in fact are not equivalent. in order to correct a misplaced clause or idea, the writer can place less important or emphatic ideas in a relative clause as in the previous sentence.