Perceived indispensability is the inherent understanding of one's integral importance to the team's ability to win

Persuasive speakers intentionally try to change or reinforce listener's feelings, ideas, or behavior

Indicate whether this statement is true or false.

Joe is a former world champion weight lifter and professional body builder. He is preparing an informative speech on the abuse of steroids in physical fitness. Through his personal experiences, what quality can Joe add to the presentation of his speech?

A) satisfaction B) motivation C) credibility D) persuasion