Answer:
C. Dr. Kim, an expert on cardiovascular disease, recommends eating a healthy diet to improve heart function.
Step-by-step explanation:
Ethos is a mode of persuasion that uses or mentions a figure that shows credibility, expertise, prestige or character in order to convince an audience that the information is reliable, valid, or worth listening. Statement C is an example of ethos because it mentions an expert on cardiovascular disease to convince people to eat a healthy diet and improve heart function.