The following question is based on The Book Thief, by Markus Zusak. At the book burning, when Liesel says she hates Hitler, Hans slaps her. He does this because...
O He is sick of listening to her complain.
She has just stolen a book, and he wants to teach her stealing is wrong.
He is extremely patriotic and loves Hitler.
It is very dangerous for Liesel to speak against Hitler in public, and Hans wants to make sure she never does it again.