A person who sells or offers for sale units or interests in condominiums, cooperative interests, or time-shares describes which of the following?

A real estate broker is licensed to manage real estate transactions, which includes the authority to sell or offer for sale various types of properties, including condominiums, cooperative interests, and time-shares. This role requires a higher level of education and experience compared to other real estate professionals. Brokers are responsible for the operation of their real estate businesses and often oversee a team of salespersons.

In this context, the responsibility of selling or marketing units or interests in multi-unit properties reflects the broker's expertise and legal capacity to engage in such transactions. The law typically distinguishes brokers from salespersons, as brokers have more extensive knowledge of real estate laws, ethics, and business practices, making them qualified to lead transactions involving these specific types of real estate investments.

The other options refer to positions with different scopes of authority and responsibilities. For example, a real estate salesperson must work under the supervision of a broker and cannot independently conduct business. An affiliate broker is a type of salesperson who works under a designated broker but typically cannot perform the full range of duties that a licensed broker can. Lastly, a supervising broker oversees other agents but is also classified as a broker, thus reinforcing the primary role of a broker in the context of selling condos, cooperatives, and time