During security inspections, which device set is specifically checked for proper functioning?

• A. Locks, keys, and microwave motion detectors
• B. Cameras and radios
• C. Chairs and desks
• D. Ventilation fans

Answer: (A)

Security inspections focus on access control and intrusion-detection devices. Locks must engage properly to prevent entry, keys must operate those locks reliably, and microwave motion detectors need to trigger alerts when movement occurs. When these components function correctly, doors and secure areas stay protected and any intruder is promptly detected. If any of them fail, there's a clear risk of unauthorized access or missed alarms, which is why this set is specifically checked. The other options involve items that aren’t directly responsible for guarding entries or detecting movement—furniture like chairs and desks, or HVAC components like ventilation fans—while cameras and radios are important for surveillance and communication, they’re not the focus of this particular security-inspection set.