Correct Answer: DReviewing the processes used to collect the production data and to compile the final production reports is the next step most consistent with IIA guidance. This allows the auditor to identify any potential errors or weaknesses in the current processes that might be causing the discrepancies. It is essential to understand the root cause of the discrepancies before taking any further action, such as notifying security or confronting managers. This approach aligns with the systematic and evidence-based investigation principles of internal auditing.