B since they are unrelated
A)
Ethos and logos
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.
The third sentence. An abstract noun is a noun you can’t physically see or touch (examples of this are usually emotions like love, hate, excitement, etc). In the third sentence, opinion is a noun. You cannot see or touch an opinion.
By looking in the text and using context clues.