Which of the following is not a type of agency representation?

The correct answer is an independent contractor because this term refers to the employment relationship rather than a type of agency representation. In real estate, agency representation involves specific roles in a transaction where one party represents another. A seller's broker works on behalf of the seller to facilitate the sale of the property. A buyer's broker represents the interests of the buyer in the purchasing process. A subagent acts on behalf of the seller's agent, providing additional assistance in marketing and selling the property.

In contrast, an independent contractor signifies a business arrangement where an individual provides services to another party while maintaining control over how those services are performed. In real estate, agents can be independent contractors who work for brokers but this term does not define the nature of the agency relationship they have with their clients. Thus, it correctly does not fit within the categories of agency representation, making it the right choice in this context.