In a jurisdiction where the common law of agency applies, a broker has listed a home and then presented to the seller an offer from another client of the broker. The offer has been accepted. The broker has what type of agency relationship with the parties

This choice incorrectly suggests that the broker only represents the seller and does not have any relationship with the buyer. However, since the broker presented an offer from the buyer that was accepted, the broker must have an agency relationship with both parties, which contradicts this option.

This option implies that the broker acts merely as a facilitator without any formal agency relationship. However, since the broker accepted an offer on behalf of both parties, it indicates that the broker has a legal duty to both the seller and the buyer, making this choice incorrect.

This choice suggests that the broker represents the seller with a sub-agency for the buyer. However, the term "sub-agency" generally indicates that the buyer is represented by another agent rather than the same broker, which is not applicable here since the broker is facilitating the transaction for both parties.