To mitigate the risk that all bank accounts may not be included in the daily reconciliation process, the most effective response is to ensure that the treasury analyst reviews a daily report generated by the treasury system. This report highlights any bank statements that have not been uploaded into the accounting system, ensuring that all accounts are accounted for in the reconciliation process. This automated approach reduces the risk of human error and ensures completeness and accuracy in the reconciliation process.
The Institute of Internal Auditors (IIA) Practice Guide: Auditing the Treasury Function IIA Standard 2130 - Control

Probability-proportional-to-size (PPS) sampling, also known as monetary unit sampling, is most appropriate for measuring the total misstatement in an accounts payable ledger. This method is used to determine the likelihood of individual items being selected based on their size, with larger items having a higher probability of being selected. This is particularly useful in identifying overstatements and misstatements in financial records, such as accounts payable, where the monetary value of transactions is a critical factor.
Institute of Internal Auditors (IIA), Practice Guide - Auditing Sampling.

* 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.

An internal control questionnaire is most appropriate in situations where controls need to be assessed across decentralized offices. This tool helps gather consistent information on the presence and effectiveness of controls in multiple locations, ensuring a standardized approach to control assessment. It allows for efficient data collection and comparison, which is critical in decentralized environments where processes and controls may vary. References: IIA Practice Guide - Evaluating Internal Controls, IIA Standard 2130 - Control

According to IIA guidance, an internal audit activity that provides overall assurance on governance, risk, and control, advises and influences senior management, and leverages the organization's management of risk is best described as being in the "Managed" stage of internal audit maturity. This stage indicates a well-established internal audit function that is integrated into the organization's governance framework and plays a proactive role in risk management and strategic decision-making. References:
* The IIA's Maturity Model for the Internal Audit Activity.
* The IIA's Practice Guide on Internal Audit's Role in Governance, Risk, and Control.