Which of the following actions may be considered a breach of fiduciary duty?

Disclosing confidential information without consent is considered a breach of fiduciary duty because a fiduciary relationship requires the agent to act in the best interests of their client and to maintain the confidentiality of sensitive information. When an agent discloses confidential information without the client's permission, it undermines trust and violates the ethical and legal obligations inherent in the fiduciary duty. This could result in harm to the client, such as financial loss or damage to reputation, making it a significant breach of the responsibilities that agents owe to their clients.

In contrast, providing all necessary disclosures to clients, acting in the best interest of clients, and documenting all transactions accurately are all actions that support fulfilling fiduciary duties and maintaining a transparent and trustworthy relationship with clients. These actions emphasize the obligation to protect the client’s interests and provide the necessary information for informed decision-making, contrasting sharply with the breach represented by disclosing confidential information.