Answer:
A. The writer first appeals to common sense and then to his or her authority.
Step-by-step explanation:
The first thing that the author does is appealing to reason, because who wouldn´t want to save $49 in a tshirt that has only been worn two times, and then appeals to his or her authority by saying that he himself has not bought a brand new piece of clothing since he was 18 years old, so he knows what he is talking about. This is appealing to common sense, and then to his authority.