Final answer:
The Fuel System Computer Unit (FSCU) in aircraft primarily manages fuel transfer from the Center Tanks to the Main Tanks to maintain aircraft balance and stability.
Step-by-step explanation:
The fuel system computer unit (FSCU) is an integral part of modern aircraft fuel systems, whose primary function is to manage the fuel balance and ensure the optimal operation of the aircraft's engines. In general, the FSCU controls the fuel transfer to maintain the aircraft's center of gravity within specified limits and to make sure that fuel is fed to the engines from the most appropriate tanks at all times. The correct answer to the question is that the FSCU automatically controls fuel transfer from c) Center Tanks to Main Tanks, prioritizing the use of fuel from the center tanks first to maintain balance and stability of the aircraft.