What action must the required Flight Attendant complement be prepared to assist with in case of an evacuation?

The required Flight Attendant complement must be prepared to assist with emergency evacuation because this is a critical responsibility aimed at ensuring the safety and wellbeing of passengers and crew in potentially life-threatening situations. An effective evacuation can save lives, and having well-trained crew members ready to guide and assist passengers in evacuating the aircraft in an orderly manner is essential. This includes demonstrating the use of exits, managing boarding slides, and helping to prioritize those who may need additional assistance, such as the elderly or disabled.

In an emergency, the ability of the flight attendants to act quickly and efficiently is vital for a successful evacuation. They are trained to assess situations, communicate clear instructions, and maintain a calm environment, thus reducing panic among passengers. This training prepares them to handle high-stress scenarios and reinforces the importance of their role during emergencies.

Other options such as boarding procedures, meal serving, and safety drills are important functions of flight attendants but do not directly pertain to the immediate actions required in an emergency evacuation scenario.