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.
In what work of Literature is this question from?
Think of what you read or seen previously before the question and then think how can this impact early childhood education for little children write down what you think it is. I hope this helps.
Crown fires, they burn the top of the trees to prevent quick spreading of fires