Explanation: There are many rhetorical devices that a writer or speaker can use to persuade or to inform an audience (readers, listeners, etc). Ethos is a rhetorical device that is commonly used in persuasive speeches or texts, it consists in appealing to the audience's ethics, it is often used by informing the beliefs, customs, or practices of a speaker or a writer to produce credibility among the audience. The given sentence, the speaker uses ethos by explaining his beliefs (in patriotism, and in the abilities of the men in the audience).
I believe the answer would be B, Ethos. Diction is the choice and use of words and phrases in speech or writing. Ethos is the characteristic spirit of a culture, era, or community as manifested in its beliefs and aspirations. A metaphor is a thing regarded as representative or symbolic of something else, specifically something abstract. And the style of logos appears to just represent information on a certain subject. Ethos is the speaker or another person, and usually, involves why that speaker is rightfully qualified for a specific rank or job. For example "As a doctor, I am qualified to tell you that this course of treatment will likely generate the best results." (sentence cited from examples.yourdictionary.com)<span> </span>
