Facilitation skills are critical for assessing corporate social responsibility through a self-assessment. Effective facilitation helps guide the participants through the self-assessment process, ensuring that all relevant issues are thoroughly discussed and that contributions from various stakeholders are effectively incorporated. This skill set is essential for eliciting insightful, honest feedback and fostering a constructive dialogue about the organization's social responsibility practices.
Institute of Internal Auditors (IIA) - International Professional Practices Framework (IPPF)

Individuals working in separate internal audit activities can be considered independent for the purpose of conducting a peer review, provided they do not report to the same chief audit executive (CAE). This separation helps to ensure that the reviewers do not have a conflict of interest or undue influence from shared reporting lines, thus maintaining the integrity of the external quality assessment process.
IIA Standard 1312 - External Assessments

Engaging a fraud specialist is most likely required when interrogating a suspected fraudster. This specific activity demands specialized skills in interviewing and understanding behavioral cues that are outside the typical expertise of internal auditors. The use of fraud specialists ensures that interrogations are conducted effectively and that the information obtained is reliable, without compromising legal or ethical standards.
The Institute of Internal Auditors (IIA) - International Standards for the Professional Practice of Internal Auditing

Performing an annual organization-wide employee survey is a proactive role for the internal audit activity with regard to the organization's ethics program. This survey can help assess the ethical climate, identify potential ethical issues, and gather employee perceptions and feedback. The results can be used to improve the ethics program, enhance training, and ensure that ethical standards are effectively communicated and upheld throughout the organization.
The IIA's Practice Guide on Evaluating Ethics-Related Programs and Activities.
The IIA's International Professional Practices Framework (IPPF) on Assessing Organizational Ethics.

Having more bank accounts than necessary can be a red flag for fraud, especially in a subsidiary compared to its peers. This scenario (option B) might indicate complexity that is unnecessary and could be used to conceal improper transactions or facilitate unauthorized movements of funds. Excessive bank accounts can complicate tracking and reconciling of funds, which can be exploited for fraudulent purposes. This potential red flag should prompt further investigation by the internal auditor.
IIA guidance on fraud risk indicators