Answer:
C. to revive Macbeth’s commitment to serve as an honorable subject to the crown
Step-by-step explanation:
In the excerpt, Banquo responds to Macbeth's mention of the three weird sisters and their prophecies. Banquo's emotional appeal is evident when he says, "My bosom franchis’d and allegiance clear, I shall be counsell’d." By emphasizing his loyalty and commitment to the crown, Banquo seeks to remind Macbeth of the importance of serving honorably and faithfully as subjects.
Banquo's words suggest that he wants to reignite Macbeth's sense of duty and commitment to the crown, implying that Macbeth's thoughts and actions should align with honorable service rather than being consumed by thoughts of the weird sisters or their prophecies.
Therefore, option C is the most likely reason for Banquo's emotional appeal in his reply to Macbeth.