The best explanation of a change in Esperanza as the story develops is:
In the past, Esperanza had a maid to do her laundry; later in the story, she asks Isabel to teach her to wash clothes.
This choice accurately reflects Esperanza's growth from a privileged girl who relies on others to do her household chores to someone who learns to take responsibility for herself and is willing to embrace new challenges. The passage illustrates her initial lack of knowledge about laundry and sets the stage for her developing independence and adaptability throughout the story.