Airplanes are hard to fly. Airplanes cost a lot of money. Airplanes can travel very quickly. Airplanes take off from the airport.
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Which fact is a benefit of airplanes?
Possibilities:
- Airplanes are hard to fly.
- Airplanes cost a lot of money.
- Airplanes can travel very quickly.
- Airplanes take off from the airport.

Airplanes can travel very quickly.