The author’s purpose in writing the paragraph is to point out the differences and similarities, to compare and contrast.
The correct answers are:
Telling a nonfiction story and using a first-person perspective.
Memoirs are life accounts of a person that is written by another person from his personal knowledge or from sources. In writing memoirs, real life experiences are used which means it is not a fiction.
It's a rational number so it does not fit into those categories.