What type of advertisement might use a famous personality to endorse a product?

Using a famous personality to endorse a product is a strategy that leverages the concept of authority, which is why it aligns with the appeal to authority. This form of advertising is based on the assumption that people are likely to trust and be influenced by someone who is perceived as an expert or has a strong reputation in their field. By associating a product with a well-known and respected figure, advertisers aim to enhance the credibility of the product and persuade consumers to choose it over others. The presence of a celebrity can evoke positive feelings and trust towards the product, making it more appealing to potential customers.

The other options focus on different persuasive techniques that do not involve using a figure of authority, such as technical jargon that may confuse the audience, fear-based marketing that aims to induce anxiety, or social comparison that encourages consumers to evaluate themselves against others. Each of these methods operates under different psychological principles that do not align with the use of a personality endorsement.