Final answer:
An unlicensed admin for a property manager can only publish a listing, as other tasks like collecting rents, taking a listing, and negotiating a contract usually require a real estate license.
Step-by-step explanation:
An unlicensed admin for a property manager can ONLY perform tasks that do not require a real estate license. Of the options provided, an unlicensed admin can publish a listing. This task does not require negotiation skills, in-depth real estate knowledge, or handling of legal documents or financial transactions that would typically require a license. Activities such as collecting rents, taking a listing, and negotiating a contract generally require a real estate license as they involve direct interaction with clients, handling money, and participating in transactions or negotiations that pertain to the sale, purchase, or leasing of property.