Which of the following is NOT a fiduciary duty?

The concept of fiduciary duty is foundational in many professional fields, particularly in finance, law, and real estate. It refers to the obligation to act in the best interest of another party. Among the options presented, engaging in competing businesses does not align with the principles of fiduciary duty.

Fiduciaries are expected to prioritize the interests of their clients above their own. Serving clients with loyalty, providing full disclosures, and acting in the best interest of the client are all essential aspects of maintaining a fiduciary relationship. Engaging in competing businesses introduces a potential conflict of interest, where the fiduciary may not act solely in the best interest of their client but might prioritize their own financial gains through competition. As such, this behavior contradicts the core responsibility of a fiduciary to act with loyalty and undivided attention to the client's needs and best interests. Therefore, it is accurately identified as not being a fiduciary duty.