According to IIA guidance, which of the following would be considered necessary for a one-person...

For a one-person audit function, the primary focus is on ensuring that there is a clear understanding of the audit policies and procedures without the need for extensive documentation. According to the IIA's guidance, a memorandum stating the policies and procedures would suffice for a one-person audit function, providing a concise yet comprehensive outline of the necessary protocols to follow. This approach ensures that the sole auditor has clear directives while avoiding the administrative burden of maintaining a more extensive manual that might be necessary for larger audit teams.

The Institute of Internal Auditors (IIA) - Practice Advisory 2040-1: Policies and Procedures