The study of word origins
From all the aforementioned, the choice which best explains the development of Jerry Cruncher's Character is that he decides to put away bad practices. The answer to your question is B. I hope that this is the answer that you were looking for and it has helped you.
The setting is a small town, where everyone knows each other, if it wasn't a small town, boo Radley might not have been known as well, and people might not have been as suspicious