What is a Jetway?

A Jetway is a covered walkway that connects the airport terminal to the entrance of an aircraft. This structure provides a safe and convenient passage for passengers when boarding and disembarking from the plane, particularly in inclement weather or extreme temperatures. Jetways enhance the overall passenger experience by allowing them to enter directly from the terminal to the aircraft without having to walk on the tarmac.

The other options do not accurately describe a Jetway; for instance, defining it as a type of aircraft or a service provided in-flight misrepresents its primary function, which is focused on facilitating access to the airplane from the terminal. Additionally, characterizing it as a safety regulation overlooks its purpose as a physical structure rather than a rule or guideline.