______ are a common advertising strategy that uses an authority to present the message.

A) Slice-of-life messages
B) Fantasy messages
C) Comparative messages
D) Testimonial messages

Testimonial Messages

Advertising messages where a person, often a celebrity or satisfied customer, endorses a product or service based on their personal experience.

Advertising Strategy

A plan devised to communicate with the target market and persuade them to buy a product or service through various advertising media.