Feelings. Hope this helps :)
Flowers for Algernon is the title of a science fiction short story and a novel by American writer Daniel Keyes. The short story, written in 1958 and first published in the April 1959 issue of The Magazine of Fantasy & Science Fiction, won the Hugo Award for Best Short Story in 1960.[2] The novel was published in 1966 and was joint winner of that year's Nebula Award for Best Novel (with Babel-17).
Answer:
C. after they went shopping at the mall is the dependent clause.
Explanation:
A dependent clause is defined as a group of words that contain a subject <em>and </em>a verb. They also don't express a <em>complete thought </em>and can't stand alone.
Option A doesn't have a subject or a verb, Option B doesn't have a subject, and Option D expresses a complete thought.
Therefore, C. is the correct answer.
Hope this helps! :D