What is the purpose of a jetway in aviation?

The purpose of a jetway in aviation is to connect the gate area and the aircraft. This is crucial for facilitating passenger boarding and disembarkation. A jetway, also known as a jet bridge, allows passengers to move between the terminal and the airplane in a safe and protected environment, shielding them from weather conditions such as rain or strong winds. It provides a seamless transition for passengers, enhancing the overall travel experience and logistical efficiency at airports.

Other options describe functions that are related to different aspects of aircraft operations but do not pertain to the primary function of a jetway. For instance, fueling an aircraft is a critical operation but is done at designated fueling stations, not through the jetway. Similarly, luggage handling takes place in separate areas where bags are stored and transferred, while navigation assistance for pilots involves equipment within the cockpit and external support systems, rather than physical connections to the terminal.