Final answer:
Using ad extensions is true for encouraging more informed decision-making by users, as they provide additional information. The FTC regulates advertising claims to prevent false facts but allows some subjective language. The principle of 'Caveat emptor' reminds buyers to be wary of advertisements.
Step-by-step explanation:
The question pertains to the effectiveness of using ad extensions in providing additional information to users, which can lead to more informed decisions and actions. This is true because ad extensions offer extra details about products or services, which can enhance the user's understanding and potentially improve click-through rates for advertisers. In the context of advertising, it is important to note that while the Federal Trade Commission (FTC) allows some exaggerated and ambiguous language, it does not permit outright false facts, and consumers should always approach advertisements with a degree of skepticism, following the caveat of Caveat emptor—let the buyer beware.