Why are helicopters so hard to fly? (Only one answer is correct)

Question

There are more controls than in an aircraft

Helicopters are inherently unstable

There are a lot of cross-couplings between the controls

Helicopters are influenced severly by their rotor turbulence

Answer 1

The correct answer is: There are a lot of cross-couplings between the controls.

Helicopters have complex control systems where inputs on one control can affect multiple axes of flight, making them challenging to fly, especially for beginners.