Answer:
The answer is indeed letter B. The nimbus represents Granny Weatherall's changing perceptions.
Step-by-step explanation:
The excerpt we are studying here was taken from the short story "The Jilting of Granny Weatherall" by Katherine Anne Porter. The main character is Granny Weatherall, an 80-year-old woman who is about to die. While lying in bed, Granny's thoughts become a messy mixture of memories and imaginary conversations. That is what the nimbus represents in the passage "She felt very strong and she saw Doctor Harry with a rosy nimbus around him." Her brain can no longer be trusted, her perceptions are constantly changing.
Granny Weatherall spends her last moments alive recalling the saddest event of her life: being abandoned by her fiancé George, the man she first loved. Granny goes back and forth between those memories and reality, confusing them. Even though she is a proud woman, she wishes George could see how well she did after marrying John.