The phrase from the excerpt that best reflects Hamlet's state of mind is C. How weary, stale, ...
This is because Hamlet is weary, meaning tired, from having to decide so much what he is supposed to do. On one hand, he wants to avenge his father's death by killing his own uncle. On the other hand, he is fatigued, and quite suicidal, which is obvious from his soliloquy, To be or not to be.