The appropriate method to prevent unauthorized access to sensitive data is to wipe the drives (Option C). Wiping ensures that all data is securely erased, preventing any possibility of recovery. This is essential when handling drives containing Personally Identifiable Information (PII). * Degaussing (Option A) erases data but is more commonly used for magnetic tapes. * Drilling through the drives (Option B) physically destroys the drives, which may not be necessary if they are being reused. * Reimaging (Option D) would overwrite the current data with new data but may not guarantee complete data destruction. CompTIA A+ Core 2 References: * 2.8 - Use common data destruction and disposal methods, including securely wiping drives.