A more thorough explanation:

Definition: Testimonial proof is a type of evidence that relies on the opinions or statements of others to support a claim or argument. It involves using testimonials or endorsements from people who have personal experience with a product, service, or idea to persuade others.

Example: A company selling a weight loss supplement might use testimonials from satisfied customers who claim to have lost weight while using the product. These testimonials might include before-and-after photos, quotes from customers about how the product helped them achieve their weight loss goals, and endorsements from celebrities or other well-known figures.

Explanation: Testimonial proof is often used in advertising and marketing to convince potential customers that a product or service is effective or worthwhile. By using testimonials from real people who have had positive experiences with the product, companies can create a sense of trust and credibility with their audience. However, it's important to remember that not all testimonials are created equal - some may be biased or exaggerated, so it's important to evaluate them critically before making a decision.