Answer: In the passage provided, Lady Macbeth (A.) believes he (her husband) is weak and won't do what needs to be done to become king.
Explanation: After reading Machbeth's letter, Lady Macbeth expresses that he deserves to be king as he does not lack ambition, but that he is too kind ("Art not without ambition, but without /The illness should attend it"). Therefore, she believes that her husband is not aggressive enough to do what it takes to be the new king. At the end of this passage, she says that she cannot wait to reunite with Macbeth at home in order to convince him to do what it needs to be done to become king. In that way, option A. is the one that presents Lady Macbeth's view of her husband.