The most appropriate action for an internal auditor who realizes that she has undertaken limited training and professional development is to accept responsibility for her own continuing professional development, develop a professional plan, and discuss it with the CAE. This proactive approach ensures that she meets the ongoing professional development requirements, aligns her training needs with the objectives of the internal audit activity, and maintains the necessary competencies to perform effectively in her role.
Institute of Internal Auditors (IIA) - International Professional Practices Framework (IPPF)

The correct statement regarding assurance and consulting services provided by the internal audit activity is that both assurance services and consulting services can be focused on controls or performance or both. This reflects the flexibility and adaptability of internal audit functions to address varying organizational needs, whether in assessing the adequacy and effectiveness of controls, improving operational performance, or both.
The IIA's International Standards for the Professional Practice of Internal Auditing on the nature of assurance and consulting services.

To ensure compliance with an organization ' s code of conduct, the chief audit executive should act as an advisor to the committee responsible for reviewing violations of the code. This role allows the CAE to contribute expertise and oversight without directly managing the process, which helps maintain the necessary independence and objectivity of the internal audit function.
IIA guidance on the role of the internal audit in governance, particularly relating to compliance with codes of conduct.

Effective third-party risk management involves conducting thorough due diligence before entering into a contract to ensure that the third party meets the organization's standards and requirements. Conducting due diligence only after contract signing is a significant red flag, as it indicates that the organization might be engaging with third parties without fully understanding the associated risks. This can lead to inadequate risk management and potential issues with compliance, performance, and security. References: The IIA's International Standards for the Professional Practice of Internal Auditing (Standards), specifically Standard
2210 - Engagement Objectives, and COSO's Enterprise Risk Management - Integrating with Strategy and Performance.

The internal auditor demonstrated due professional care by deciding to remove a test from the audit work program when the cost outweighed the benefit. Due professional care involves considering the efficiency and cost-effectiveness of audit procedures in relation to the potential benefits. This decision shows prudent judgment and a focus on optimizing the value of audit activities. References: Institute of Internal Auditors (IIA) - International Professional Practices Framework (IPPF)