Per Standard 2340 - Engagement Supervision, supervision ensures objectives are achieved, quality is maintained, and staff are developed. Regular discussions between supervisors and team members (D) represent proper, ongoing supervision. Options A, B, and C are either impractical or irrelevant.

According to Implementation Guidance on Independence and Objectivity (Standard 1110), internal auditors may serve in advisory roles as long as they avoid assuming management responsibility. If the CAE assigns a representative to a sensitive steering committee, the choice should be based on relevant expertise and experience to add value without compromising independence. Option D is correct: selecting an auditor with prior experience in mergers or due diligence ensures competence while maintaining objectivity.
Options A and B confuse the role of the auditor with gathering intelligence or strategy promotion. Option C is incorrect, as participation does not require only the CAE.

* A. Book value per common share ratio is lower than that of the prior year:This represents year-over- year comparison, which is an example of historical benchmarking, not internal benchmarking.
* B. Staff turnover ratio is higher than the comparable organization in the same industry:This represents external benchmarking, as it involves comparing against a peer organization.
* C. Utilities expense of the sales unit is higher than that of the customer service unit:Correct. This is internal benchmarking, as it compares performance metrics within the same organization.
* D. Sales are significantly higher than the industry's average for five years:This is an example of external benchmarking against the industry standard.
CIA Exam Syllabus Reference:
Domain V: Performing Internal Audit Services - Benchmarking Techniques.

* ISO 31000 Context: ISO 31000 provides guidelines on risk management, emphasizing the importance of understanding the external context.
* External Context: This includes external factors such as regulatory and competitive environments that can impact the organization's risk profile.
* Regulatory Environment: Understanding regulations helps the organization ensure compliance and avoid legal risks.
* Competitive Environment: Analyzing the competitive environment allows the organization to anticipate market changes and manage competitive risks.
References:
ISO 31000 Risk Management Guidelines.

Review notes are a tool used by engagement supervisors to ensure that audit workpapers and related documents are accurate, complete, and in line with auditing standards. According to the IIA's International Standards for the Professional Practice of Internal Auditing, these notes are part of the supervisory process, designed to improve the quality of the audit engagement.
* IIA Standard 2340 - Engagement Supervision:
* This standard emphasizes that audit engagements must be properly supervised to ensure that objectives are achieved, work is performed according to appropriate standards, and the results are supported by sufficient evidence. Review notes are part of this supervisory process.
* Clearing Review Notes:
* Once the concerns raised by the engagement supervisor are addressed, review notes serve their purpose and can be removed from the final documentation. This is standard practice, as the final workpapers should reflect only the resolved and agreed-upon findings and conclusions.
* Documentation and Record Retention:
* According to the IIA's standards, while it's essential to document that supervision took place, the specific review notes themselves do not need to be retained once the issues are resolved. The documentation should reflect the final outcome of the review process, ensuring that the audit work is thoroughly vetted.
* IIA Practice Advisory 2330.A1-1:
* This advisory highlights that workpapers should be complete, and clearing review notes helps in maintaining clarity and reducing unnecessary clutter in the final audit documentation.
* Option B: This option suggests that management must address the review notes, which is incorrect. The engagement supervisor's notes are meant for the audit team, not management.
* Option C: This option implies that the chief audit executive must sign the review notes, which is not a requirement by the IIA standards. The CAE ensures overall supervision but does not need to sign each review note.
* Option D: While review notes do demonstrate supervision, they do not need to be retained after the concerns have been addressed.
Detailed Explanation:Why Not Other Options?Conclusion: Option A is correct because it reflects the best practice of clearing review notes once they have fulfilled their purpose during the audit process, aligning with IIA guidelines.