What is the name of the double-decker passenger airliner manufactured by Airbus?

The double-decker passenger airliner manufactured by Airbus is the A380. This aircraft is notable for being the world's largest passenger airliner, featuring a unique two-deck configuration that allows for a significantly higher passenger capacity compared to single-deck models. The A380 can typically accommodate around 555 passengers in a standard three-class configuration, but its design allows for configurations that can hold even more travelers.

The A380 combines advanced materials and technology, resulting in improved fuel efficiency for such a large aircraft. Its distinct double-decker design also enhances onboard comfort by allowing airlines to offer more spacious cabins and better amenities. The aircraft made its first flight in 2005 and has been used for long-haul international flights, connecting major cities around the world.

Other choices represent different models in the Airbus family. The A350, for instance, is a modern long-range, twin-engine aircraft designed for efficiency and comfort, but it does not feature the double-decker layout of the A380. The A320 is a smaller single-aisle aircraft primarily used for short to medium-haul routes, and the A300 is an older model that was Airbus’s first commercial aircraft, also not featuring the double-deck design.