Final answer:
The licensees staffing the booth at the local shopping mall must be individually licensed as real estate brokers. This is necessary to adhere to the state's legal and regulatory standards for professionals in the real estate industry.
Step-by-step explanation:
An Oregon principal real estate broker who wants to place a booth in the local shopping mall to display information on listings and have it regularly staffed by licensees must adhere to legal and regulatory standards set by the state. Among the given options, the correct one is that the licensees staffing the booth must be individually licensed as real estate brokers.
Most states, including Oregon, require professional licensure for real estate brokers to ensure they have the necessary education and have passed required examinations to represent buyers and sellers in real estate transactions. The license demonstrates that they meet the minimum standards of the profession. Operating such a booth without proper licensing would be against state regulations.