Which of the following is considered to be correct subsystem to deflect control surface?

A)
Hydraulic system
B)
Fuel system
C)
Deice system
D)
Pneumatic subsystem

Correct Answer :   Hydraulic system


Explanation : Hydraulic subsystem will be correct choice for control surface deflection. Pneumatic subsystem is used for low power or pressure requirements. Fuel system includes fuel tanks, fuel lines etc.