Which of the following is allowed for unlicensed assistants in real estate?

The correct answer is the ability for unlicensed assistants to transmit listings and changes to the MLS. This task does not require a real estate license because it involves administrative functions rather than direct interaction with clients or the public in a manner that would constitute providing real estate services. Ensuring that listings are accurately conveyed to the Multiple Listing Service is a support function that helps licensed agents manage their business effectively.

In contrast, showing properties to potential buyers and hosting open houses involve personal interaction with clients and provide real estate services that require a licensed agent's knowledge and expertise. Similarly, making cold calls to solicit listings directly engages with potential clients in a manner that also necessitates a real estate license, as it involves marketing and soliciting business. Thus, while unlicensed assistants play a supportive role in many real estate transactions, their activities are limited to specific tasks that do not involve client interaction or the practice of real estate.