What are the two types of induction systems in engines?

The correct identification of the two types of induction systems in engines is based on how air is drawn into the engine's combustion chamber. In naturally aspirated systems, air enters the engine purely through atmospheric pressure without any additional assistance. This type relies on the engine's design and displacement to pull in the air needed for combustion, which limits the power output compared to systems that add pressure.

On the other hand, boosted or pressurized systems utilize a mechanism to force more air into the combustion chamber. This is typically achieved through supercharging or turbocharging, which compresses the intake air, allowing the engine to burn more fuel and produce more power than what could be achieved through natural aspiration alone. This method increases efficiency and performance and is common in modern performance and high-efficiency engines.

The other options do not accurately reflect the common classifications used in automotive terminology. Although they include terms like "electrically powered" or "recuperative," these are not standard classifications for induction systems in the context of how air enters the engine. Understanding these distinctions is crucial for grasping engine performance and design concepts.