Final answer:
The correct answer is A, C, D. In Act 1 of Macbeth, Macbeth's reasons for not killing Duncan include loyalty, fear of consequences, and guilt, but not ambition, which is a driving force urging him to consider the murder.
Step-by-step explanation:
In Act 1 of Macbeth, the reasons Macbeth contemplates for not killing King Duncan do not include ambition. Instead, Macbeth's hesitations arise from loyalty to Duncan, as he is the king's kinsman and subject. Additionally, Macbeth expresses fear of the consequences, acknowledging the 'judgment' that awaits him and the teaching of 'bloody instructions' that will return to plague the inventor.
Finally, guilt plays a role in his reluctance. However, Macbeth's ambition is, in fact, a driving force encouraging him to consider the murder, rather than a deterrent. His ambition is evidenced by his continued contemplation of the witches' prophecy and his eventual decision to follow through with the act, despite the other reasons he has for wanting to keep Duncan alive.