Final answer:
Flight Attendant "A" should use the indicator light for the emergency exit doors during the arming/disarming process.
Step-by-step explanation:
During the arming/disarming process, Flight Attendant "A" should use the indicator light for the emergency exit doors. This indicator light allows the flight attendant to verify that the doors are properly armed or disarmed and ready for use in case of an emergency. It is crucial for the flight attendant to ensure that all emergency exit doors are appropriately armed or disarmed to maintain the safety of the passengers and crew.
The cabin crew encompasses every member of the crew on the plane who is responsible for safety and security, except the pilots, while air hostesses specifically refer to female flight attendants who also provide customer service and passenger care.