How do hybrids contribute to lower emissions?

• A. By using electric propulsion and regenerative braking to reduce fuel consumption and emissions.
• B. By using larger gasoline engines to burn cleaner fuel.
• C. By relying on diesel fuel with lower emissions.
• D. By removing exhaust systems entirely.

Answer: (A)

Hybrids lower emissions by combining electric propulsion with energy recovery to cut fuel use. The electric motor can drive the vehicle at low speeds or assist the gasoline engine, allowing the engine to run less often and at a more efficient point, which reduces fuel consumption and exhaust. Regenerative braking captures part of the car’s kinetic energy during braking and stores it in the battery, so the engine doesn’t have to produce as much power, further lowering emissions. This approach is especially effective in city driving with frequent stops, where traditional engines would burn more fuel. The other ideas don’t achieve the same reductions: a larger gasoline engine typically raises fuel use, diesel or other fuels don’t automatically deliver the same emissions benefits in a hybrid setup, and removing exhaust systems is unsafe and illegal.