Answer:
B. developing the central idea that this love is special and enduring.
Explaination:
in the given passage from "Annabel Lee" we can see the description of the love between the speaker and Annabel Lee, the speaker starts by introducing the idea that their love is special and enduring "But our love it was stronger by far than the love Of those who were older than we— Of many far wiser than we" and then he develops this idea by providing details about how neither the angeals nor the demons could separate them. So the correct answer would be option B.