Final answer:
The most widely used arrangement to avoid dual agency is to change the listing relationship to a transaction broker.
Step-by-step explanation:
The most widely used arrangement to avoid dual agency is to change the listing relationship from the traditional fiduciary relationship to what is most commonly called a transaction broker. A transaction broker is a real estate agent who does not represent either the buyer or the seller, but instead facilitates the transaction between the two parties. They do not owe fiduciary duties to either party, but instead act as a neutral third party.