Which type of advertising uses an appeal to personal experiences and stories to convince others?

The correct choice is testimonials, which are a powerful form of advertising that relies on personal experiences and stories to persuade an audience. This approach typically features satisfied customers or celebrities sharing their stories about how a product or service positively impacted their lives. By showcasing real-life examples and emotional connections, testimonials build credibility and trust, as potential customers can relate to the experiences shared. This makes them more likely to consider the product favorably.

On the other hand, glittering generalities involve vague and positive statements that lack specific details, scientific evidence relies on factual data and research to support claims, and plain folks appeal to the everyday experiences of average individuals, but it does not necessarily center on personal stories like testimonials do. Each of these approaches serves different purposes in advertising but testimonials specifically focus on personal experiences, which is why it is the correct answer in this context.