Macbeth was very strong willed. when he believed he needed to do something that is the only thing he would think about. being very strong willed is one of macbeths strengths but he believed he needed to do more to cover up what he had done.
Answer:
B
C
D this will help sometimes
He was stabbed in the eye with a wooden stake and was drunk - odysseus said to him his name was nobody so polyphemus shouted 'Nobody is killing me!'
or effectively "nobody is killing me by force or treachery" like you said