Select one of the memoirs from this module. name the memoir and explain its theme. give at least one example from the story that illustrates the theme.

The question is asking to state or give one example in the story that illustrates the theme, base on my experience and base on my research, I would say that  the answer would be its Climax, and also the Resolution part of the story. I hope you are satisfied with my answer and feel free to ask for more 

C. It's to her aunt/uncle, so it has no need to be formal. 

The variation of the sentence structures do no determine the intended audience.
It is not written in a third person pov.
It is somewhat concise, but its definitely not impersonal. It shows affection and a clear, loving connection. Therefore, it is personal.