The statement that an employee who diverts the organization's purchases for personal use is demonstrating asset misappropriation is true regarding occupational fraud. Asset misappropriation involves the theft or misuse of an organization's assets and is one of the most common types of occupational fraud. Using organizational resources for personal benefit directly falls under this category.
References: Association of Certified Fraud Examiners (ACFE) reports and guidance on types of occupational fraud.

Demonstrating due professional care involves thorough testing and evaluation of evidence. The internal auditor exhibited due professional care by selecting a sample of purchase orders above a specific threshold and obtaining documentation for each to verify compliance with the required bidding process. This methodical approach ensures that audit findings are based on sufficient, appropriate evidence and that conclusions about the effectiveness of controls are well-supported.
International Standards for the Professional Practice of Internal Auditing, particularly those related to due professional care and evidence evaluation.

The chief audit executive (CAE) may decide to outsource an audit of the organization ' s cloud governance due to a lack of proficiency within the internal audit staff. Cloud governance involves specialized knowledge and skills related to cloud technologies, security, compliance, and risk management. If the internal audit team lacks the necessary expertise to perform a comprehensive and effective audit in this area, outsourcing to external experts ensures that the audit is conducted with the required depth and quality.
IIA Standard 1210: Proficiency
IIA Standard 2070: External Service Provider and Organizational Responsibility for Internal Auditing

According to IIA guidance, the internal audit charter is a formal document that defines the internal audit activity's purpose, authority, and responsibility. It establishes the internal audit activity's position within the organization, including the nature of the chief audit executive's functional reporting relationship with the board; authorizes access to records, personnel, and physical properties relevant to the performance of engagements; and defines the scope of internal audit activities. Final approval of the internal audit charter is done by the board, not just senior management. Furthermore, the charter might describe the expectations for communicating the results of the quality assurance and improvement program, which ensures that the internal audit activity continues to operate effectively and efficiently.
IIA Standard 1000: Purpose, Authority, and Responsibility; and Standard 1300: Quality Assurance and Improvement Program.

The first step for a newly hired chief audit executive (CAE) to build and maintain the proficiency of the internal audit activity should be to incorporate the basic criteria of internal audit competency into job descriptions. This foundational step ensures that all current and future hires are aligned with the required skills and competencies needed for effective internal audit functions. It sets a clear expectation of skills and knowledge right from the recruitment stage, thereby facilitating the development and maintenance of a competent audit team.
The Institute of Internal Auditors (IIA) - Practice Guides on Talent Management