In "the bat-poet," why is finding the chipmunk so important to the little brown bat? a. the chipmunk has written many wonderful poems as well. b. the chipmunk knows how to make the mockingbird listen to the bat's poems. c. the chipmunk is a very learned poetry critic. d. the chipmunk is a willing audience for the bat to share his work with.

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.  

3 is blunder, i’m not sure about the last one but the first two look correct