Final answer:
The correct answer is D. Fiduciary relationship, which is a bond of trust and responsibility between two parties, where one acts in the best interest of the other.
Step-by-step explanation:
The term that describes a special bond built on trust, confidence, and responsibility is D. Fiduciary relationship. A fiduciary relationship is one where an individual or organization acts on behalf of another person or people, and is bound to act in their best interests. This type of relationship is essential in various business practices, such as between a lawyer and a client, or a trustee and a beneficiary.