Qantas is the national airline of Australia. It is one of the oldest and most well-known airlines in the world. The name Qantas comes from "Queensland and Northern Territory Aerial Services." It started in the year 1920 and has been flying people for over 100 years.

Qantas is known for being very safe and offering great service. It flies to many countries around the world and also operates many flights within Australia. Qantas has a strong reputation and is often ranked as one of the best airlines in the world.

The airline has played an important role in connecting Australia with the rest of the world. It helps people travel for work, holidays, and family visits. It also brings tourists to Australia, which helps the country’s economy.

Qantas planes have a red tail with a white kangaroo on it. The kangaroo is a symbol of Australia, so when people see a Qantas plane, they know it is from Australia. The airline also helps during emergencies like bushfires or floods, by flying help to where it is needed.

Because of its long history and connection to the country, Qantas is often called the "Spirit of Australia."

So, the correct answer is Australia. Qantas belongs to Australia and is a proud part of the country’s history and future.