"An" in a grammar is a word that is utilized alongside a noun <span>to specify </span>grammatical<span> definiteness of the noun.</span>
Your answer is gentle souls are often disguised by rough exteriors. The others do not cover the overall theme of the book. Yes some rich and poor kids do not get along, but that is not an overall lesson. Also how often did they walk home alone. The story does not revolve around that. Last, Cherry was not a main character, she was not a main part of the plot. So your answer is once again the first one, it goes with the overall plot of the story.
B.<span>The figurative language is mostly physical (dancing, cheering) before the volta and moves to mental after it (thought, speech). Hope it Helps :D</span>
The style is called "Call and Response" : )