Final answer:
In 'A Wrinkle in Time,' Mrs. Who implies that Meg and Charles Wallace need to help Mr. Murry, setting the stage for their adventure.
Step-by-step explanation:
In "A Wrinkle in Time," when Meg and Charles Wallace first meet Mrs. Who, she implies that they need to help Mr. Murry. Mrs. Who does not directly say who needs help initially but uses quotations to communicate, and through the context of the conversation, it becomes clear that Mr. Murry is the one who requires assistance. This is crucial information as it sets the stage for their adventure to rescue him.