Macbeth visits the witches for a second time because he is afraid he might lose his position as king. Now that he has become king, Macbeth is paranoid that others will discover that he killed Duncan and kill him or dethrone him in some other manner.
The answer is A; Juliet says she will run away if forced to marry Paris. Her mother tells her that is probably the best plan because Capulet will not change his mind