The fuel oil system of a GTE provides all EXCEPT which of the following?

Correct Answer: Option D — Acts as a cooling medium for the lube oil cooler

The fuel system is responsible for metering fuel, actuating fuel controls, and positioning variable stator vanes. However, it does not act as a cooling medium for the lube oil cooler; that function is performed by the reduction gear lube oil or a dedicated seawater/freshwater heat exchanger system.