Final answer:
While an agent must fulfill duties of loyalty, care, and good faith towards their client, promoting a maximum of aggregate good, as per Ross's ethical duties, is not a specific fiduciary duty in a legal context.
Step-by-step explanation:
An agent has several fiduciary duties to a client, which are critical in a principal-agent relationship. These duties are based on ethical and legal grounds and are designed to foster trust and good faith between the agent and the client. While Ross identified several moral commitments, not all directly translate to fiduciary duties in a legal context.
The fiduciary duties include, but are not limited to, duty of loyalty, duty of care, and duty to act in good faith. These require the agent to act in the best interests of the client, exercise reasonable care and diligence, and operate with honesty and integrity. However, promoting a maximum of aggregate good, as one of Ross's prima facie duties, is not a specific requirement of an agent towards their client. Although related to ethical behavior, in a business context, the agent's primary obligation is to the client rather than the overall good in society. Hence, promoting the overall good in the world is a moral concept, not a legal fiduciary duty expected of an agent in the realm of client representation.