Which item helps secure oversized passengers during the flight?

Extension seatbelts are specifically designed to accommodate passengers of varying sizes, including those who are oversized. These seatbelts provide additional length and flexibility, ensuring that all passengers can be securely fastened in their seats during the flight. Properly securing oversized passengers is essential for safety, as it ensures that they are held in place during takeoff, turbulence, and landing, contributing to overall cabin safety.

Standard seatbelts might not fit all passengers adequately, particularly those who require more space. Emergency exit doors are critical for evacuation but do not relate to passenger seat security. Life vests are safety equipment for emergency water landings and do not play a role in securing passengers during the flight. Therefore, extension seatbelts are the appropriate choice for this context, as they specifically address the need to secure oversized passengers comfortably and safely.