Umm, I'm kind of confused about the question, but I would assume that if, for example, I was taking an exam an pre-read the questions before answering, that I would be more prepared to answer, and therefore have a slightly better chance of getting the answer right...? I'm not really sure.
Noise I believe, since that is what is being escaped from by the hiker
It tells Macbeth that he will never be killed until the Birnam wood comes to Dunsinane.
B is the answer!! You’re welcome