Diagram the following sentence.
Winning the election had been his dream for twenty years.

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.  

uh, the answer is d i guess.

the correct answer is d.   to change the pace

explanation:

i would believe it would be b., the author wants to draw the reader deeper into the experience