If the operations management lacks the competency to execute internal control measures, the most appropriate action by the internal audit activity to assist in achieving continuous improvement is to provide training on controls and on self-monitoring processes. This helps build management's capacity to understand and implement effective controls and fosters a culture of continuous improvement within the organization.
References: IIA guidance on the role of internal audit in developing management's control competencies, highlighting training and educational support as key methods for enhancing internal control practices.