Answer:
Ethos.
Step-by-step explanation:
The expression ethos describes the moral disposition of a person, a community or special social group. It is thus in the synonym field of morality and sense of duty.
In classical rhetoric, according to Aristotle, ethos describes one of the three types of conviction, the one performed through the authority and credibility of the speaker, who appeals to the sense of morality of the audience to convince them. In the case, Thomas Jefferson, a patriot widely known to society, appeals to his credibility as such to convince the settlers of the reasons for declaring independence from the United States.