What does a flashing white light signal from the control tower to an aircraft taxiing indicate?

Answer: C — To return to the starting point on the airport

A flashing white light signal from the control tower to an aircraft taxiing signifies that the aircraft should return to the starting point on the airport. This signal is part of the standardized lighting signals used to communicate with pilots when voice communication isn't possible or to reinforce instructions. In the context of airport operations, this signal can be crucial in managing ground traffic and ensuring safety. Pilots must understand and respond appropriately to the flashing white light to navigate the airport safely and avoid potential hazards or conflicts with other aircraft. It's important for pilots to be familiar with these signals to maintain efficient and safe operations on the ground.