Answer:
A. Pathos.
Explanation:
Pathos is the use of emotionally appealing to the readers through the use of words such that they evoke pity or influence the readers. This is a form of rhetorical language used by writers in persuading their readers.
In the given lines from the Declaration of Independence, the writer/ speaker uses pathos to appeal to the people in declaring "we mutually pledge to each other our Lives, our Fortunes, and our sacred Honor". This is to persuade them to the emotional aspect of the people in declaring their objective and decision.
Thus, the correct answer is option A.