How do hybrid vehicles contribute to sustainability?

Hybrid vehicles contribute to sustainability primarily by combining a conventional internal combustion engine with an electric propulsion system. This design allows hybrid vehicles to optimize fuel efficiency by utilizing the electric motor for lower speeds and during idling, while the gasoline engine can kick in when additional power is needed, such as during acceleration.

This dual approach reduces overall fuel consumption and minimizes emissions compared to traditional vehicles that depend solely on gasoline engines. The ability to operate on electric power in various scenarios means that hybrids can reduce greenhouse gas emissions, leading to a less significant impact on the environment.

The other options reflect characteristics that do not promote sustainability; for instance, relying only on gasoline engines would not take advantage of the potential reduction in emissions and fuel consumption. Additionally, increasing noise pollution and promoting higher fuel consumption contradict the sustainability goals that hybrid vehicles aim to achieve.