Answer:
d. try to kill herself.
Step-by-step explanation:
In Act 5, scene 1, the doctor who is examining Lady Macbeth tells the gentlewoman to remove from her "the means of all annoyance." This is a reference to things that Lady Macbeth might hurt herself with. The doctor believes that Lady Macbeth is possessed, as he believes sleepwalking and sleeptalking to be supernatural events. He is worried that in such a state, she might want to kill herself. He reaches the conclusion that she is in need not of a doctor, but of a priest.