Which word is often used to clearly identify the advertiser as a broker?

The term "Realtor" is specifically associated with members of the National Association of Realtors (NAR) and is a designation that identifies real estate professionals who adhere to a strict code of ethics. Using "Realtor" in advertising not only clarifies the individual's connection to the brokerage but also conveys a commitment to professionalism in the real estate transaction process. This designation is a recognized brand within the industry, offering an assurance to consumers regarding the agent's qualifications and adherence to ethical standards.

In contrast, options like "Broker," "Real Estate," and "Representatives" can be more generalized and may not carry the same weight or recognition in identifying a professional in the real estate market. While "Broker" might indicate someone's level of licensure, it does not necessarily denote membership to a professional association that promotes ethical practices, like "Realtor" does. The other terms could refer to a variety of roles within the industry, further lacking the specificity needed to clearly identify an individual as a broker. Hence, "Realtor" serves as the most definitive term for this purpose.