Which type of appeal is most associated with motivating others based on their sense of duty and ethics?

The most suitable choice for motivating others based on their sense of duty and ethics is the ethical appeal. This type of appeal engages the audience's moral values and ethical principles, encouraging them to act based on what is perceived as right or just. Ethical appeals often rely on the credibility and character of the speaker, establishing a strong connection with the audience's sense of responsibility and integrity.

This appeal is particularly effective when the goal is to inspire action or change by aligning a message with the listener's moral compass. Utilizing ethical appeal can foster trust and respect, leading individuals to feel compelled to respond positively to the request or message being conveyed.