In the exceprt from "To Kill A Mockingbird," by Harper Lee, Ms. Maudie criticizes Boo Radley's father. The reason is that Mr. Radley's sense of right and wrong was so strict and severe that it made him punish Boo in a cruel and excessive manner. As a consequence, Boo has become a recluse who lives a solitary life and tends to avoid other people.
I would definitely go with C. a topic sentence. While A. is never a bad idea, essay paragraphs tend to get marked as off topic if there is not a topic sentence. Hope this is helpful!