Why must pilots comply with speed adjustments requested by ATC?

Answer: B — To maintain safe separation from other aircraft.

Pilots must comply with speed adjustments requested by Air Traffic Control (ATC) primarily to maintain safe separation from other aircraft. This is essential for ensuring the safety of all flights within controlled airspace. Speed modifications help ATC manage the traffic flow effectively, allowing for safe distances between aircraft during various phases of flight, such as takeoff, landing, and cruising. When an aircraft is flying at an appropriate speed as directed by ATC, it reduces the risk of collisions and allows for smoother operations in busy airspace. Maintaining prescribed speeds also enables ATC to sequence arrivals and departures more effectively, optimizing traffic patterns and minimizing delays. By adhering to these speed adjustments, pilots contribute to the overall safety and efficiency of the airspace system.