When an internal auditor has audited the same department repeatedly, familiarity threat is a significant concern. The IIA Standards emphasize maintaining objectivity and avoiding circumstances that could impair the auditor's unbiased attitude. Auditing the same department annually for several years can lead to familiarity, which can compromise the internal audit activity's independence and objectivity (Option B).
According to Standard 1130: Impairment to Independence or Objectivity, auditors must avoid auditing areas where repeated engagements might lead to a lack of objectivity due to familiarity.
IIA Standards, Standard 1130: Impairment to Independence or Objectivity IIA Practice Guide: Independence and Objectivity

Developing policies and procedures for the internal audit activity is the most effective way for the chief audit executive (CAE) to ensure that internal auditors demonstrate due professional care. This action provides a framework and guidelines that direct auditors on how to perform their duties in accordance with the highest standards of audit practice, including adherence to ethical and professional standards set out by bodies such as the IIA.
IIA Standard 1300 - Quality Assurance and Improvement Program

A detective control is designed to identify and correct errors or irregularities that have occurred. A compliance specialist conducting quarterly reviews fits this definition as it involves monitoring and detecting non-compliance issues after they have occurred, allowing for corrective actions to be taken. References:
* COSO Internal Control Framework and the IIA's guidance on types of controls.

Given the chief audit executive's (CAE) new responsibility for the risk management and compliance operations, the independence of the internal audit activity could be compromised in future audits of these functions. Therefore, to maintain objectivity and impartiality, audits of risk management and compliance functions should ideally be overseen by a competent external assurance provider. This approach ensures that the audit is free from internal influence and bias, aligning with the IIA's standards on independence and objectivity.
IIA Standard 1110 - Organizational Independence

Risk avoidance is a strategy where an organization decides not to engage in actions or activities that carry risk. By choosing to postpone new investments due to unfavorable economic conditions, management is opting to completely avoid the risks associated with these investments under the current economic scenario.
Institute of Internal Auditors (IIA) Glossary and Standards.