Which of these elements would be included in a story's exposition? A. gossip about characters
B. background information about characters
confessions from characters
C.
D. biographical information about the author

B.) background information about characters

Explanation:

Exposition is a literary device that is meant to relay background information about a main character, setting, event or other element of the narrative.

since it is asking for her reaction to elnora's trouble at school you can rule out any answers with a positive response (b). then you can rule out (d), this is because it does not show the mother's reaction but the daughter's response. that leaves you with two options (a) and (c), by looking at the options you can rule out (c) because it isn't referring back to elnora's issues at school.