In the excerpt above, we can see that Dr. William Lew is using statistics, numbers, proof, to support his claims. Pathos is definitely incorrect because he is not trying to appeal to anyone's feelings, but rather to their sense of logic. Therefore B and C are incorrect. Cosmos is not something that exists as a form of rhetoric, so D is also incorrect. This leaves us with the correct answer - A. ethos and logos. Ethos and logos have to do with logic and proof, which is the case here.
Ethos refers to the credibility of the speaker and his
knowledge about the subject. In the example given, the speaker is Dr. William
Leu who has attained a reputation and can be considered an expert about the
organ, heart, as he has over 25 years of experience being a cardiologist.
Logos refers to the message’s logic and backed up with
evidences. In the example given, Dr. Leu has researched and has a conclusion
about the topic, that’s why his claim can be considered as sufficiently backed
up.
