I believe the answer is D) to show that he had lingered so long by the door, the wife felt that he had been there more than an entire day.
Answer:
It forces Charlie to talk to Mr. Donnegan about being a janitor again.
Explanation:
"Flowers for Algernon" by Daniel Keyes is a short story of how a mentally r e t a rde d man Charlie Gordon grew from being r e t a rde d to intelligent and then back to his own self. Charlie had always wanted to be intelligent like other people and thus, was selected for a scienti fic experiment which succeeds.
But, not everything was to be permanent. He began to re g r e ss back to his own self, forgetting things he had learned and even the memories he had in his mind. Towards the end of the story, Charlie had re gressed so much, bringing him back to his r e t a rde d self. And being left with no job or income to sustain himself, he had to ask Mr. Donnegan to let him work as a janitor again. This inability to pay his rent forced him to seek the favor of his former acquaintances/ friends/ boss.
D seems most likely I think
