Which of the following is an activity that an internal auditor must not perform?

A chief audit executive (CAE) reports functionally to the CEO and administratively to the chief financial officer, both of whom serve on the company's board of directors. According to IIA guidance, which of the following would offer the greatest protection for the independence of the internal audit activity?

As a matter of policy, the chief audit executive routinely rotates internal audit staff assignments and periodically interviews the staff to discuss the potential for conflicts of interest. These actions help fulfill which of the following internal audit mandates?

An internal auditor is reviewing employee travel data to identify opportunities to cut costs while ensuring adequate participation at conferences to support the organization's mission. Which of the following pieces of evidence would be sufficient for completing this task?

During an account receivables audit, an internal auditor found a significant number of input errors resulting in a $500, 000 balance understatement.
Which of the following is the most important question the internal auditor should ask to develop an appropriate recommendation for this finding?