The role of internal auditors in assessing how an organization promotes ethics and values internally and with external business partners involves reviewing the organization's objectives, programs, and activities related to these areas. This approach aligns with the standard practice of internal auditing, which aims to ensure that an organization's processes and policies support its ethical standards and values.
Institute of Internal Auditors (IIA) Standards and Guidelines.

The key difference between assurance services and consulting services is that other employees in the organization can provide consulting services, but only an internal audit activity can provide assurance services. This distinction is important because assurance services require a level of independence and adherence to specific standards that are unique to the internal audit profession. References: IIA definitions and standards for assurance and consulting services, which delineate the roles and limitations of these services within internal audit practices.

Ensuring an organization's risk management program remains effective over time is most critically supported by conducting a combination of ongoing risk reviews and individual evaluations. This approach allows for continuous monitoring and updating of the risk landscape, ensuring that the risk management processes adapt to changes in both internal and external conditions.
IIA guidance on effective risk management practices

The internal auditor's failure to identify the origins of a significant control issue before concluding the engagement suggests a lack of critical thinking skills. Critical thinking involves analyzing and evaluating an issue thoroughly to understand its root causes before forming a judgment. Improving this skill would enhance the auditor's ability to conduct deeper analyses and provide more valuable insights in audit reports.
Institute of Internal Auditors (IIA) - Competency Framework for Internal Auditors

The chief audit executive (CAE) is responsible for assuring that all required components are included in the internal audit charter. The CAE must ensure that the charter clearly defines the purpose, authority, and responsibility of the internal audit activity, and that it aligns with the standards set by the Institute of Internal Auditors (IIA). The CAE is also responsible for presenting the charter to senior management and the board for approval.
The IIA Standards: Standard 1000 - Purpose, Authority, and Responsibility: "The chief audit executive must periodically review the internal audit charter and present it to senior management and the board for approval." IIA Practice Guide: "Internal Audit Charter: Understanding the Components": Emphasizes the CAE's responsibility in developing and maintaining the charter.