Final answer:
The pitch trim wheels move the horizontal stabilizer to adjust the aircraft's pitch attitude, providing fine-tuning of the plane's balance and reducing pilot workload.
Step-by-step explanation:
The relationship between the pitch trim wheels and the horizontal stabilizer is that the pitch trim wheels move the horizontal stabilizer to adjust the pitch attitude of the aircraft. When a pilot uses the pitch trim wheels, they are able to set and maintain a desired aircraft attitude without having to apply constant pressure to the control yoke or stick. The horizontal stabilizer is a crucial control surface that provides stability and control for the pitch axis of the aircraft. So, the correct option is:
C) The pitch trim wheels move the horizontal stabilizer
The pitch trim system allows for fine-tuning of the aircraft's balance and helps reduce pilot workload during flight, especially on long flights where maintaining a specific pitch could be tiring without the aid of the trim system. It's an essential part of the aircraft control systems that contribute to a safer and more efficient flight.