The answer is A because they all have to do with being written by yourself not by others
The purpose of beginning the selection with Mama's recollections and then moving to Dee's arrival is to emphasize the contrast between Maggie and Dee. It helps the reader get a better understanding of why Maggie and Dee are so different from Mama's perspective.
I would assume the blank would be "get" or "return."
This reminds me of the squiggles and drawings and wind