A strong conclusion will restate the thesis statement and broaden the scope of the essay in four to six sentences. You should also have an effective last sentence in the essay so you can wrap it up on a high note.
I reckon everything but E is a correct answer.
Bob Ewell was killed by Boo Radley, who stuck a kitchen knife into his chest on the night of Halloween. Bob wanted to get revenge on Atticus for trying to kill the children who were walking back from a Halloween school party.