Which of the following qualifies as an advertisement?

An advertisement is generally understood as any communication that promotes a product or service to potential customers, aimed at generating interest or influencing their purchasing decisions. In this context, direct mail solicitation clearly fits the definition, as it involves sending promotional materials directly to consumers in an effort to encourage them to engage with or utilize a product or service.

Direct mail solicitation typically encompasses promotional items, discount offers, or informational content designed to attract the attention of prospective clients, thus serving a marketing function. It is intended to reach a targeted audience to drive sales or sign-ups, aligning directly with the purpose of an advertisement.

To further clarify the context regarding the other choices, a follow-up letter related to a specific transaction serves more as a confirmation or supplementary communication about an existing business relationship rather than an advertisement. Similarly, a rate sheet prepared for internal use is not intended for consumer marketing and does not seek to engage or attract potential clients. Meanwhile, an educational brochure on managing a checking account focuses on informing and educating customers rather than promoting a specific product or service for commercial gain, which does not categorize it as an advertisement.