Who is responsible for passenger safety and service during a flight?

The flight attendant plays a critical role in ensuring passenger safety and service during a flight. They are specially trained to handle various situations, from conducting safety demonstrations and emergency procedures to providing in-flight service and assistance. Their primary responsibility is to monitor the cabin environment, addressing passenger needs and ensuring compliance with safety regulations.

While the first officer does have responsibilities related to the overall operation and safety of the aircraft in collaboration with the captain, the direct interaction with passengers concerning safety measures and service falls to the flight attendant. The ground staff, on the other hand, is focused on operations before and after a flight, not during it, and the flight engineer, while crucial in managing aircraft systems, is not involved in passenger interactions or safety monitoring. This delineation of roles highlights why the flight attendant is the correct choice in this scenario.