One of the essential skills for a head of internal audit is the ability to apply the International Professional Practices Framework (IPPF) issued by the Institute of Internal Auditors (IIA). The IPPF consists of mandatory and supplemental guidance that provides the principles, standards, and best practices for internal audit activities. A head of internal audit should be familiar with the IPPF and ensure that the internal audit function conforms to its requirements and expectations. The IPPF also helps the head of internal audit to demonstrate the value and quality of internal audit to the stakeholders.
Additional Information:
Data analysis and mining, technical and IT skills, and risk management and planning are also important, but they are not specific to the role. The mandatory guidance of the IPPF includes the Core Principles, the Code of Ethics, the Standards, and the Definition of Internal Auditing. The supplemental guidance includes Implementation Guidance, Supplemental Guidance, and Practice Advisories.

Protecting the objectivity of internal auditors is a crucial aspect of maintaining the integrity and reliability of the internal audit function. According to the International Standards for the Professional Practice of Internal Auditing (Standards), specifically Standard 1120: Individual Objectivity, internal auditors must have an impartial, unbiased attitude and avoid any conflict of interest. Prohibiting auditors from accepting gifts from audit clients or potential clients (Option C) is a clear measure to prevent conflicts of interest and ensure that auditors remain objective and free from undue influence. This practice is in line with maintaining the highest level of ethical standards as per the IIA's Code of Ethics.
IIA Standards, Standard 1120: Individual Objectivity
IIA Code of Ethics