Which statement is uniquely associated with the transaction broker relationship?

In a transaction broker relationship, the unique aspect is that the customer is not responsible for the acts of the licensee. This means that the licensee is functioning in a neutral capacity, facilitating the transaction between the buyer and seller without representing either party as an agent. Therefore, any actions taken by the licensee are not attributed to the customer, which is fundamental in a transaction broker setup.

In contrast, the other statements imply a more traditional agency relationship where a higher level of responsibility and representation is involved. In those scenarios, either the licensee holds the buyer or seller accountable for their actions or is providing full representation, which does not align with the nature of a transaction broker relationship.