In a jurisdiction where the common law of agency applies, a broker has listed a...

Comprehensive and Detailed Explanation (150–250 words):

Under the common law of agency, an agent owes fiduciary duties to the party they represent. If a broker represents a seller under a listing agreement but also brings a buyer who is their client, the broker now represents both parties in the same transaction. This creates a dual agency relationship.

Dual agency is lawful in Massachusetts only if there is full disclosure and written informed consent from both parties. Without disclosure, it would be an undisclosed dual agency, which is illegal.

A: Incorrect — the broker does represent the buyer.

B: Facilitation is a non-agency relationship, but that’s not the case here.

C: Buyer is not a sub-agent of the seller; they are a client.

Correct answer: D: dual agency.