When taxiing, what is the correct position of the flight control surfaces?

The correct position of the flight control surfaces when taxiing is neutral to avoid unintended flight control responses. Keeping the control surfaces in a neutral position ensures that the aircraft remains stable and is less likely to experience unexpected movements that could lead to difficulty in controlling the aircraft on the ground. This is especially important in maintaining directional control during taxi operations on taxiways and runways, where precision is crucial to avoid collisions and ensure safety.

While full deflection or constant pitch adjustments may seem like they would enhance responsiveness or visibility, they can lead to unintended results that compromise safety and control. Therefore, maintaining a neutral position is the best practice during taxiing procedures.