What topics must be covered during a cabin crew pre-flight safety briefing?

The correct answer emphasizes the importance of safety and security in a cabin crew pre-flight safety briefing, which is critical for ensuring the safety of passengers and crew members. During such briefings, crew members are instructed on how to handle various situations that may arise, including security threats and medical emergencies.

Focusing on safety and security is paramount in the airline industry, as it prepares crew to act decisively and effectively should an incident occur. First aid kits are also an essential component in this training, given the possible medical emergencies that can occur during flights. Ensuring that the crew is well-versed in first aid procedures reflects a commitment to passenger safety.

The other options, while mentioning relevant topics, do not encompass the critical focus on safety and security that is the primary aim of a pre-flight briefing. Understanding and acting on safety and security protocols are crucial for cabin crew effectiveness in emergency situations.