The answer is the fourth choice. It would make sense because the line is flat on the bottom for 2 tiles, meaning the plane is taxiing around the airport. (Taxi in aviation is when an aircraft moves slowly on the ground before takeoff or after landing.) Then after that, the line goes up, meaning the plane took off there. The other choices are incorrect either because they: did not include taxi, said the plane remained at cruising altitude, or said the plane is losing altitude.
