I believe it is A, although i'm not 100% sure. Hope I helped:)
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>
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Popo is one of the main characters of Miguel Street, written by Trinidadian and Tobagonian British writer V.S. Naipaul. He is regarded by the narrator as somewhat of a philosopher because of his gentle and laidback nature.
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Please clarify your question. Thanks!