The right option is; D. testimonials
Testimonials technique is the technique that the advertising company has used to persuade me to buy the soda.
Testimonial advertising is a promotional method used by advertising media in which an individual’s statement (written or spoken) eulogizes the virtue of a service or product. In this method, testimonials from satisfied customers are used to authenticate the effectiveness of a product and to show how it can be beneficial to others. Testimonial advertising uses different methods such as celebrity endorsement and expert opinion.
