'Feeling blue' means that a person is sad, or depressed.
Hamlet feels that is where a woman has a best chance at being faithful, and where she will cause the least amount of damage. After all, as he tells Ophelia also, "why wouldst thou be a breeder of sinners?"; in a nunnery, she won't have children and bear wicked men-like his uncle-that do awful things.
The answer would be C, because him knowing that he can do this to his sister gives him knowledge which then causes him to have power over the situation.
Hm.. I think No Or Yes so it is a yes
