During the internal audit recommendations monitoring process, it is most appropriate for internal auditors to determine the frequency and approach to monitoring. This responsibility aligns with the need to ensure that corrective actions are effectively implemented and that the risks identified in the audit are appropriately mitigated over time.

IIA References:

IIA Standard 2500: Monitoring Progress mandates that the CAE must establish and maintain a system to monitor the disposition of results communicated to management. The frequency and approach should be based on the significance of the observations, the risks involved, and the status of corrective actions.