Comprehensive and Detailed in-Depth Explanation: The primary role of KPIs is to provide measurable insights into the performance of business processes and identify variances that may require corrective actions. KPIs help organizations understand whether their processes are achieving desired outcomes and where improvements are needed. While Option A discusses workflow optimization, it is a secondary benefit rather than the primary purpose. Options B and C do not accurately describe the core purpose of KPIs. ISACA CISA Reference: Domain 1 - Information System Auditing Process