Final answer:
b. ethos. If you are experienced in the field of study pertaining to your argument, then you have ethos on your side.
Step-by-step explanation:
In the context of your argument, if you are experienced in the field of study pertaining to your argument, then you have ethos on your side. Ethos is the presentation of a believable, authoritative voice that elicits an audience's trust. It establishes credibility and authority by showcasing your expertise and knowledge in the subject area. In contrast, pathos refers to the use of appeals to feelings and emotions shared by an audience, while logos is the use of credible information-facts, reasons, and examples- to support a logical and sensible conclusion.