The velocity at which yawing motion can be produced by rudder deflection while the aircraft is on the ground is called _______

A)
Control speed
B)
Ground roll speed
C)
Ground control speed
D)
Minimum control speed on the ground

Correct Answer :   Minimum control speed on the ground


Explanation : Minimum control speed on the ground is the minimum speed at which enough aerodynamic force can be generated in the vertical fin by rudder deflection while the aircraft is still rolling on the ground to produce a yawing moment on the aircraft.