A gas turbine engine in which exhaust gas heat energy is added to the compressor air charge before entering the combustor, is classified as which of the following?

Correct Answer: Option B — Regenerative cycle.

A regenerative cycle utilizes a heat exchanger, or regenerator, to transfer thermal energy from the hot turbine exhaust gases to the cooler compressed air before it enters the combustion chamber. This process improves overall thermal efficiency by reducing the fuel required to achieve the necessary combustion temperature.