Which of the following correctly describes height zoning?

Height zoning is primarily concerned with the safety and efficiency of air traffic. It establishes limits on the height of buildings and other structures in and around airports and flight paths to ensure that these structures do not interfere with the safe operation of aircraft. This regulation is crucial for preventing accidents and ensuring that pilots have clear airspace to navigate.

While other options mention height regulations, they do not encompass the broad safety implications related to aviation. Height restrictions for commercial or residential buildings, or even for fences and walls, are more localized and do not address the overarching need to maintain clear airways for aircraft. Therefore, the correct choice highlights the essential function of height zoning in aviation safety.