If you are looking for the entry buoy in the dictionary, which guide words could you find at the top of the page?

B

Explanation:

N comes before O  and P comes after it. The others would come either too late in the dictionary (answers C and D) or too early (A)

an old person

explanation:

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.