B. Boo Radley's character helps Jem and Scout learn to leave people alone.
Explanation:
Jem and Scout are afraid of Boo Radley due to rumors surrounding him. they are afraid of his acts and they considered their neighbor as ghost. The children were terrified with the rumors and they did not wanted to come across Boo ever. Once when these kids were sitting in freezing cold Boo places blanket on them to comfort them and protect them from cold. Boo teaches children not believe on rumors and they should create opinion about someone only after they see his actions.
