Being in a pickle means to be stuck in a difficult situation so the answer should be D
In this story, illness -specifically mental illness- is seen as temporary, and is not taken seriously. This is seen at the very beginning of the story, when the narrator indicates that her husband (a doctor) does not believe that she is truly ill. When a person is experiencing mental illness in this story, they are also believed to be cured by rest, exercise, and fresh air. Rather than today's methods of therapy and/or medication, the story describes merely taking a break from work and going away until one seems to be better.
I'm having a lot of trouble with this lesson as well!
Prepositional Phrase I’m working on the same thing and have a list of those phrases