According to IIA guidance, which of the following is a required aspect of an internal...

The internal audit charter is a formal document that defines the internal audit activity's purpose, authority, and responsibility. According to IIA standards, the internal audit charter must define the reporting relationships within the organization, which facilitates the independence and objectivity of the internal audit function. The inclusion of reporting relationships ensures that there is clear communication and understanding regarding the internal audit activity’s position within the organization.

IIA Standard 1000: "Purpose, Authority, and Responsibility"