The correct answer is D. The intercooled-recuperated gas turbine cycle utilizes an intercooler to reduce the required high-pressure compressor power by cooling the air between the low-pressure and high-pressure compressors. This reduced compressor power requirement leads to a decrease in the amount of fuel required to achieve the desired turbine inlet temperature. The recuperator then utilizes the waste heat from the turbine exhaust to preheat the compressed air entering the combustor, further reducing the required fuel input. The other answer choices incorrectly describe the roles of the intercooler and recuperator in this cycle.