The correct answer is option C. "Ethos". Aristotle's "modes for persuasion" are ways of persuading people to believe a point of view, often used in a speech. Ethos, is the mode of persuasion of convincing an audience by using a notable figure, usually an expert in a field. In this example, Stalin is using the ethos mode of persuasion as he is referring Lenin in his speech, a notable political figure.
