What is the primary benefit to the internal audit activity for undertaking an internal quality assessment?

Suspecting fraud, the chief financial officer (CFO) asked the internal audit activity to investigate a significant increase in travel related expenditures. Work was performed by a qualified internal auditor. Following the completion of the engagement, the chief audit executive (CAE) reported to the CFO that no violations were found and no fraud had occurred.
According to the Standards, which of the following principles did the CAE violate?

Which of the following items should the chief audit executive disclose to senior management regarding the results of the internal audit activity's quality assessments?

According to IIA guidance, which of the following statements describes one of the similarities between assurance and consulting services?

Which of the following activities is most likely to require a fraud specialist to supplement the knowledge and skills of the internal audit activity?