In a hybrid electric vehicle, explain the primary benefit of regenerative braking in terms of energy recovery and how it directly impacts the demand on the internal combustion engine for propulsion.

Regenerative braking in a hybrid electric vehicle (HEV) recovers kinetic energy, which is the energy of motion. When a driver applies the brakes, instead of dissipating this energy as heat through friction in conventional brakes, regenerative braking uses the electric motor as a generator. The electric motor, which normally uses electricity to turn the wheels and propel the car, can be reversed electronically. In this reversed state, the spinning wheels turn the motor, and this mechanical action genera....