Management at XYZ Org suspects that Raul, an employee in charge of selecting venues for...

The best answer is C. Raul must have breached the duty of fidelity that he owed to XYZ Org. In the CFE framework, a conflict of interest becomes legally actionable when the employee’s undisclosed or improper self-interest results in a breach of the duty owed to the employer. Employees are expected to act in the organization’s best interests when performing their job responsibilities. When an employee allows a personal or economic interest to interfere with that duty, the issue is no longer just an appearance problem; it can become a legal wrong.

Option B describes a common way a conflict of interest arises—failure to disclose a personal or economic interest—but that fact alone is not always the full legal basis of an actionable claim. The central legal problem is the breach of loyalty or fidelity to the employer. Option A is incorrect because disclosure to the organization generally weakens, rather than establishes, a concealed conflict-of-interest claim. Option D is also incorrect because a direct financial benefit is not always required; the actionable issue is the employee’s divided loyalty and breach of duty, not necessarily proof of a specific direct payment. Therefore, the legally necessary condition that makes the claim actionable is the breach of the duty of fidelity, making C the strongest answer.