Constitution is a written document that contains principles and laws, according to which the government of the country should function. It defines the power of the government and the rights and duties of the citizens.
He helps her with her fear of monsters by going along with it. He calls it the Imaginary Demon. By making her fear seem like a "real" thing, it adds humor to it and makes it less frightening.
It is C because she made a sacrifice to heat up the chicks even though she knew what would happen if she got caught, but she knew she was doing the right thing.
