Which of these choices is an example of appealing to authority in propaganda?

Appealing to authority in propaganda involves leveraging the credibility of a well-known figure to influence public opinion or behavior. A celebrity endorsement exemplifies this approach, as it relies on the celebrity's fame, reputation, and perceived authority in a particular domain to sway the audience. People often trust or admire celebrities, whether they are actors, athletes, or influencers, and this admiration can transfer to the product or idea being promoted. By using a celebrity endorsement, the propagandist seeks to foster trust and validation, encouraging the audience to accept the message based on their reverence for the authority figure rather than the message's intrinsic merits. This method taps into the emotional connection many individuals have with celebrities, making it an effective strategy in marketing and propaganda.