Read the excerpt from The Diary of Anne Frank. PETER

I suppose you miss your friends and all.

ANNE

It isn't just . . . (She breaks off, staring up at him for a second.) Isn't it funny, you and I? Here we've been seeing each other every minute for almost a year and a half, and this is the first time we've ever really talked. It helps a lot to have someone to talk to, don't you think? It helps you to let off steam.

PETER

(Going to the door) Well, any time you want to let off steam, you can come into my room.

What theme is best expressed in this excerpt?

Peter learns how to be a friend through his conversations with Anne.
Friends and loved ones are only appreciated when you miss them.
Anne and Peter become closer as a result of the struggles they share.
Sharing a difficult experience can often bring people closer together.