B. He uses logos to show the sensibility of his argument and then ethos to show that he has put his ideas into practice.
Explanation:
In "Resistance to Civil Government," Thoreau uses rhetorical devices in order to convey a powerful message. Initially, he uses logos to show the sensibility of his argument. He explains to us why it is that he believes resistance is important and necessary, and why all citizens have the right to follow their principles and values. Later on, he uses ethos to show that he has put his ideas into practice. By explaining this, he gains credibility and makes his argument more persuasive.
