Which option correctly describes the Emergency Lighting System?

• A. 4 Rechargeable Batteries; 10 Minutes of illumination
• B. 2 Rechargeable Batteries; 5 Minutes of illumination
• C. 3 Rechargeable Batteries; 8 Minutes of illumination
• D. 5 Rechargeable Batteries; 15 Minutes of illumination

Answer: (A)

The Emergency Lighting System is designed to keep escape-path lighting powered for a minimum of 10 minutes after normal power is lost, so passengers can evacuate safely. It relies on four rechargeable batteries to provide the necessary power with redundancy and adequate coverage across the cabin. This configuration—four batteries and ten minutes of illumination—meets the required duration and power redundancy for reliable emergency lighting. The other options don’t align with that standard: they propose shorter or longer illumination times or an incompatible battery count, which wouldn’t guarantee the same level of reliability during an evacuation.