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Fuselage is the main body of the aircraft designed to accommodate the passengers, crew members, and cargo. This central structure provides the cabin spaces for people, the cockpit for pilots, and the cargo holds, while also acting as the primary load-bearing element to which wings and tail surfaces attach. It’s essentially the backbone that holds everything together and, on many jets, also serves as the pressurized cabin that keeps passengers comfortable at altitude.

Why this fits best: the term describes the core body that houses people and goods, which is exactly what the option states.

The other components refer to different parts: the tail section houses the horizontal stabilizer and contributes to stability and control; the engines are the propulsion system; and the wing structure generates lift. Each of those describes a separate system, not the main body that carries people and cargo.