What’s the title of the story or the chapter?
If the underlined pronoun is who, then the answer is C) subject. If the underlined pronoun is you, then the answer is indirect object.
I would say that the best one is C
To entertain. The books are literally a fantasy series. I suppose it also helped her through her depression and such, but her actual purpose was to entertain and teach some morals suck as the importance of friendship.
The first analogy is abstract. The second analogy is concrete. Shakespeare: plays:: Mark Twain: Novels; screen: computer:: face: watch. Sorry, I'm not sure how to prove the concrete/abstract part but I'm sure that I'm right.