What type of agreement is commonly used to appoint a real estate professional?

A listing agreement is the correct choice because it is specifically designed to formally engage a real estate professional to represent a seller in the sale of a property. This agreement outlines the terms and conditions under which the agent will market the property, including the duration of the agreement, the commission structure, and the responsibilities of both the agent and the seller. It establishes a fiduciary relationship, ensuring that the agent acts in the best interests of the seller.

In contrast, a sales agreement typically refers to the contract that transfers ownership of a property from the seller to the buyer; it is not used to appoint an agent. A buyer's agreement, while related, pertains to establishing the terms under which a real estate professional represents a buyer in purchasing a property, rather than appointing the agent for a sale. A rental agreement is focused on leasing properties rather than real estate sales, making it unrelated to the appointment of a real estate professional in the context of selling a property.