Flashes forward and backward are useful writing tools for a variety of reasons. What is the LEAST likely reason to use a “flash”? to deepen the inner conflict of the character

to provide the reader with important hints that foreshadow future events

to introduce a new character to the story

to create contrast for the character through memories of happier times

to create contrast for the character through memories of happier times

the conclusion would be the most affected category scoring

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.