Answer: The correct answer is 1,100 km/hour.
Step-by-step explanation:
Displacement of the plane = 4,400 km
Time taken by the plane = 4.0 hour

Since, Velocity is a vector quantity which means it has direction with magnitude. So, the velocity of the plane is 1,100 km /hour west.
Hence, the correct answer is 1,100 km/hour.