What duty is a broker fulfilling by only showing a seller's property during specified hours?

A broker showing a seller's property only during specified hours is fulfilling the duty of obedience. This duty requires a broker to follow the lawful instructions and guidelines set forth by their client, in this case, the seller. By adhering to the specified showing times, the broker is demonstrating compliance with the seller's wishes and maintaining the terms of their agreement. This respect for the seller's preferences not only reflects a commitment to the client’s needs but also upholds the broker's responsibility to act in the best interest of the client within the boundaries of legal and ethical standards.

The other choices reflect different responsibilities a broker has, such as providing accurate information, maintaining accountability in transactions, and exercising due care in performing their duties, but the action of limiting showings to specific hours directly aligns with the duty of obedience.