A backdrop setting can be defined as: A set of circumstances or facts that surround a particular event or situation.
A surrounding or pervading mood or environment.
A setting that is highly useful in the story.
O A setting that does not provide significance to the story.

ASAP

a biography is a genre that mainly accounts somebody's life and that is written by somebody else. this genre supports sonia nazario's desire to share enrique's life because she can fully inform readers of his entire emotional journey.

in a biography, an author can share the readers almost everything about a person's life, or just one key event or personal aspect the author is interested in telling, like in this specific case in which sonia nazario is centered in enrique's emotional journey.