To maintain independence and objectivity, the internal auditor should seek permission to extend the current engagement and obtain approval from the process owner before performing any improvement tasks such as training staff on how to use macros. This ensures that the improvement task is formally acknowledged and approved, maintaining the integrity of the audit process. References: = IIA Standard 1130 - Impairment to Independence or Objectivity and IIA Standard 2410 - Criteria for Communicating.

According to IIA guidance, an appropriate role for the internal audit activity with regard to the organization's risk management program is to attain an adequate understanding of the organization's key risk mitigation strategies. This enables internal auditors to evaluate the effectiveness of risk management processes and provide assurance on the adequacy of risk controls. Identifying and managing risks, ensuring risk management processes exist, and ensuring controls exist to mitigate risks are responsibilities of management, not internal audit.
IIA Standards: 2120 - Risk Management
IIA Practice Guide: Internal Audit's Role in Risk Management

To effectively communicate the acceptance of risk in an organization, a chief audit executive (CAE) must first consider the organization's view on risk tolerance. Understanding the organization's risk tolerance is crucial because it defines the level of risk the organization is willing to accept in pursuit of its objectives. This perspective guides how risks are communicated and managed across the organization.
IIA Standards: 2120 - Risk Management
IIA Practice Guide: Assessing Organizational Governance in the Public Sector

To gather relevant feedback on the newly implemented software used by 3,000 employees in South America and Europe, distributing surveys to the software users in both regions is the best approach. Surveys can reach a large number of users quickly and can provide comprehensive feedback on various aspects of the software, including usability, functionality, and user satisfaction. This method allows for the collection of a wide range of opinions and experiences, which can be analyzed to identify common issues and areas for improvement.
The Institute of Internal Auditors (IIA) Practice Guide: Auditing IT Projects IIA Standard 2310 - Identifying Information

Comprehensive and Detailed Explanation:
According to IIA Standard 2010 - Planning, the internal auditor must establish engagement objectives considering relevant risks to the activity under review. Even when an external investigator (corporate investigation team, regulator, or law enforcement) is addressing specific fraud incidents, the internal audit function still has a responsibility to evaluate fraud risks, related controls, and systemic weaknesses. Excluding fraud areas entirely (A) is inappropriate, as it ignores critical risks. Supporting investigators in an advisory- only role (B) may compromise independence, and option C only applies if the audit team lacks fraud expertise, in which case they may still assess control design without conducting the fraud investigation itself.
The best approach is Option D: the auditor should consider fraud risk and control weaknesses highlighted by the investigation and incorporate them into the audit scope. This ensures the audit adds value by focusing on systemic gaps that allowed the fraud to occur in the first place.