Final answer:
In 'To Kill a Mockingbird,' Atticus reveals that Boo Radley is the one who wrapped a blanket around Scout during Miss Maudie's house fire, showing Boo's caring side.
Step-by-step explanation:
In the novel To Kill a Mockingbird by Harper Lee, Atticus upsets the Finch children, Scout and Jem, by revealing that it was Boo Radley who wrapped a blanket around Scout without her noticing. This occurs when the children are standing outside the Radley house during Miss Maudie's house fire. The incident demonstrates Boo's silent yet caring presence despite being an enigmatic and misunderstood character in the eyes of the children.