In cases where a junior auditor suspects fraud involving an engagement supervisor's associate and the supervisor dismisses these concerns, the most appropriate and ethical action is to escalate the issue to a higher authority within the audit function, such as the chief audit executive (CAE). This ensures that the concern is objectively evaluated and that the auditor adheres to professional standards of independence and objectivity.
Institute of Internal Auditors (IIA) - Code of Ethics and International Standards for the Professional Practice of Internal Auditing

Organizing volunteers from the organization to provide periodic plantation skill sharing to farmers represents a corporate social responsibility (CSR) activity. This initiative not only supports community development but also aligns with sustainable agricultural practices, which is especially relevant for an agricultural organization.
This activity focuses on giving back to the community and enhancing sustainability, both key aspects of CSR.
Definitions and examples of CSR in industry guidelines

The ultimate goal of establishing a robust risk management framework in an organization is to facilitate the achievement of the organization's business goals and objectives. A comprehensive risk management framework helps identify, assess, and mitigate risks that could impede the organization's ability to achieve its strategic objectives, ensuring that risks are managed in a way that supports the organization's overall mission and goals.
The IIA Standards: Standard 2120 - Risk Management: "The internal audit activity must evaluate the effectiveness and contribute to the improvement of risk management processes." COSO Framework: Emphasizes that the purpose of risk management is to help organizations achieve their objectives and enhance performance through effective risk management practices.

According to IIA guidance, the internal audit charter should document the nature of consulting services provided by the internal audit activity. This helps to define and communicate the scope and extent of consulting services that the internal audit is authorized to provide, thereby establishing clear boundaries and expectations for both the audit team and the rest of the organization.
IIA Standard 1000: Purpose, Authority, and Responsibility.

The most appropriate match between a potential temporary guest auditor candidate and an upcoming audit assignment is a manager of social responsibility who has a nursing background to participate in a health and safety audit for the corporate office and plant facilities. This candidate's background in nursing and current role related to social responsibility aligns well with the focus of a health and safety audit, leveraging relevant experience and knowledge. References: Institute of Internal Auditors (IIA) - International Professional Practices Framework (IPPF)