Final answer:
The sentence that most clearly makes a logos appeal is option A: 'As a doctor, I have seen many similar cases; this is nothing new.' Logos is a rhetorical appeal that relies on logical reasoning and evidence. In this sentence, the speaker appeals to their professional expertise as a doctor and their experience with similar cases to support their claim.
Step-by-step explanation:
The sentence that most clearly makes a logos appeal is option A: 'As a doctor, I have seen many similar cases; this is nothing new.'
Logos is a rhetorical appeal that relies on logical reasoning and evidence. In this sentence, the speaker appeals to their professional expertise as a doctor and their experience with similar cases to support their claim. This logical argument is based on the premise that because the doctor has encountered many similar cases, the situation being discussed is not uncommon or unusual.