Answer:
The theme of the story is humility.
Explanation:
Humility comes from accepting what one has and not asking for more or turning to greed. Throughout the story, we see the fisherman being happy with what he has but his wife keeps asking for more, resorting to greed and not having enough. She takes advantage of the good deed her husband did by letting the fish go.
I think a would be the best answer for the preposition
