Final answer:
Macbeth called off the murder of King Duncan due to guilt, fear of consequences, and Lady Macbeth's influence.
Step-by-step explanation:
Macbeth called off the murder of King Duncan because he was overcome with guilt and fear of the consequences. Initially, Macbeth was driven by his ambition to become king and the prophecy of the witches, but he starts to realize the moral implications of his actions. Moreover, Lady Macbeth's deteriorating mental state and guilt also plays a role in Macbeth's decision.
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