Is this the entire question!?
You can find this in spark notes
The correct answer is A, angry.
Whereas he is secretive in the beginning when he doesn't want to show his identity to the Hobbits, and he is definitely brave and devoted, he doesn't really show the emotion of anger, either in the movies, or in the books.
If the "books" wasn't a plural, it would be "his" but since it isn't singular, it would be "their"
