正解:B
Quality control reviews are the best way to demonstrate to senior management and the board that an audit function is compliant with standards and the code of ethics. These reviews assess the efficiency and effectiveness of the audit function, ensure compliance with audit standards and ethics, and identify areas for improvement12. While audit staff interviews, control self-assessments (CSAs), and corrective action plans can provide valuable insights, they do not offer the same level of assurance as a comprehensive quality control review12.
References: The Institute of Internal Auditors1, AuditBoard2