The correct answer is: A. Supercharged engine.
A supercharged engine is an internal combustion engine that uses a supercharger to increase the pressure of the air entering the engine. This increases the amount of air-fuel mixture that can be burned in each cylinder, which in turn increases the power output of the engine. However, superchargers also add weight and complexity to the engine, and they can reduce fuel efficiency.
A diesel engine is an internal combustion engine that uses compression ignition to ignite the fuel-air mixture. Diesel engines are more efficient than petrol engines, but they are also more expensive to manufacture and maintain.
A petrol engine is an internal combustion engine that uses spark ignition to ignite the fuel-air mixture. Petrol engines are less efficient than diesel engines, but they are also less expensive to manufacture and maintain.
All of the above engines will produce power, but the supercharged engine will produce the least power. This is because the supercharger adds weight and complexity to the engine, and it can reduce fuel efficiency.