I'd go with B - Article. There are hundreds of good examples for the answer being B. For example, "a book" ('a' is an article - 'book' is a noun), "an apple" ('an' article - 'book' noun). Those are just the simple ones.
Based on this synopsis, heroism is the likely theme used to develop Bilbo's character in The Hobbit.
The coach brought the bag of team jerseys to the game
He puts his family on display when he take in the case of Tom Robinson
