The sole internal auditor of a municipality wants to implement proper supervision over internal audit...

The Global Internal Audit Standards require that workpapers be properly supervised and reviewed to ensure quality and compliance. A sole auditor cannot perform a meaningful self-review (Option A). Having clients review workpapers (Option B) compromises independence. Having management or the board sign off (Option C) is also inappropriate as it undermines audit objectivity.

The most suitable solution is to arrange for peer reviews from external auditors or other organizations, with confidentiality and legal safeguards in place. This provides independent oversight while maintaining audit quality.