B, When Esperanza tries to save Sally from making a bad decision or being exploited by the boys in "The Monkey Garden," she realizes that Sally is more assertive than she thought, and when Sally sticks up for herself, the boys respect her. This realization makes Esperanza feel small and powerless, as she had always seen Sally as a passive victim who needed her protection. Therefore, the correct answer is:
Sally is more assertive than Esperanza thought, and when Sally sticks up for herself, the boys respect her.