I believe the correct answer is D. The repeated use of "hot" and "cold" words supports the theme "Passion is a powerful force."
Throughout the play, Hamlet is obsessed with passion and its consequences. He is disgusted with Gertrude's sinful, carnal passion for Claudius, that made her betray his father. He implies that the youth should be forgiven their fits of passion if their parents can't resist it. In this moment, Hamlet is showing a lot of violent passion himself, and these words seem to unconsciously justify his own temper.