I haven't read the story, but if I had to guess, it's A. If it's a fable, that makes it unreal and considered 'magical' and has flying in the title. Or it could be D, because fables generally attempt to teach the reader an important lesson.
The answer is D because the paragraph does not say he is hungry, an animal, or a lover. You can infer that Otis is shy since you don’t really talk to outgoing people like that.