If time is of the essence and the workstation is mission-critical (e.g., the only access point to a corporate database), the quickest and most reliable recovery method is to restore from the last backup. This will return the system to a known working state with minimal downtime.
* Option B (Reinstall the OS): Time-consuming and not ideal if a backup is available.
* Option C (System File Checker): Can help if the problem is limited to corrupted system files, but doesn' t guarantee complete recovery of user data or configurations.
* Option D (Hardware Diagnostics): Not relevant unless there's a known or suspected hardware failure.
? Reference:
* CompTIA A+ 220-1102 Exam Objective 2.5 - "Given a scenario, use best practices associated with types of backups."
* Microsoft Docs: Restore from a system image backup