According to IIA guidance, the most appropriate action for a new chief audit executive to gain an understanding of the current level of knowledge, skills, and competencies required by an internal audit activity is to identify gaps in the activity's proficiency based on criteria defined by a widely accepted competency framework. This method directly addresses the proficiency needs and aligns the internal audit team's capabilities with professional standards and the demands of their specific roles within the organization.
References: The IIA's guidance on internal audit competency frameworks, which suggests using established standards to assess and align internal audit capabilities.

According to IIA guidance, the internal audit activity should refrain from conducting an assurance engagement for which it lacks the necessary competencies or skills. This requirement ensures that internal audits are carried out effectively and that audit conclusions are reliable. It upholds the integrity and professionalism of the internal audit function by ensuring that all engagements are performed with the requisite level of expertise.References: The IIA's International Standards for the Professional Practice of Internal Auditing on proficiency and due professional care.

The directive that should concern the chief audit executive (CAE) the most is that internal auditors shall perform risk management activities. While internal auditors can assess and provide assurance on risk management processes, taking on the role of performing risk management activities can impair their objectivity and independence. Risk management is a management responsibility, and if internal auditors are involved in these activities, it could lead to conflicts of interest and compromise their ability to provide independent assurance.
References:
* The IIA Standards: Standard 1112 - Chief Audit Executive Roles Beyond Internal Auditing: "If the chief audit executive has or is expected to have roles and/or responsibilities that fall outside of internal auditing, safeguards must be in place to limit impairments to independence or objectivity."
* The IIA Practice Guide: "Independence and Objectivity": Discusses the importance of maintaining independence by avoiding operational responsibilities like risk management.

To evaluate the effectiveness of ethical programs, the most appropriate action for the CAE is to use employee surveys to assess whether the ethical programs are achieving desired outcomes (Option C). Surveys provide direct feedback from employees on the effectiveness and impact of ethical programs, offering insights into whether the programs are understood, accepted, and adhered to by the workforce. This approach aligns with the IIA Standards, specifically Standard 2110: Governance, which includes evaluating the design, implementation, and effectiveness of the organization's ethics-related objectives, programs, and activities.
References:
* IIA Standards, Standard 2110: Governance
* IIA Practice Guide: Evaluating Ethics-related Programs and Activities

This option best demonstrates the board of directors' governance over internal control by illustrating their role in ensuring the continuity and integrity of leadership, which is a crucial aspect of the internal control environment. Succession planning, especially for top leadership positions, is a critical governance role that impacts the organization's strategy and risk management practices.References: Institute of Internal Auditors (IIA) - Guidelines on Governance Roles of Boards