Which of the following is a requirement before a licensee may show a property to a prospective buyer in Maryland?

The correct choice is that the buyer must sign a representation agreement or acknowledgment of sub-agency before a licensee may show a property to a prospective buyer in Maryland. This requirement is rooted in the principles of agency law and emphasizes the importance of establishing a clear, legally recognized relationship between the agent (licensee) and the buyer.

A representation agreement formalizes the understanding of the services the agent will provide and the obligations of the parties involved, ensuring that the buyer comprehensively understands their rights and the commitments of the licensee. This agreement is crucial as it clarifies the roles and duties within the agency relationship, promoting transparency and trust.

The options referencing the buyer signing a list of previous transactions, the licensee informing the buyer of all potential listings, or the buyer providing a purchase offer before viewing do not constitute necessary or mandated steps under Maryland law. Such practices might be useful in some contexts but do not fulfill the specific legal criteria that must be met before a licensee can show properties to prospective buyers. The agency relationship and the necessary agreements are what govern these interactions, thereby ensuring both compliance with legal standards and the protection of the involved parties' interests.