Answer:
The literary device the author employs in the last sentence of the passage is:
B. foreshadowing.
Explanation:
"Marigolds" is a short story by American author Eugenia Collier (born 1928). It has a first-person narrator, Lizabeth, who is 14 years old and lives in a poor community during the Great Depression.
The last line of the passage is:
"And these feelings combined in one great impulse toward destruction."
This line uses a literary device called foreshadowing, which happens when an author reveals a detail that will later unfold into something important in the plot. In this particular case, when Lizabeth mentions "destruction", she implies that she will later destroy all the beautiful marigolds in Ms. Lottie's garden. Lizabeth is angry, sad, and confused. This is the way she finds to externalize her feelings.