In the context of the passage which of the following best articulates how the author regards the topic?

• A. Hybrid vehicles are less expensive, so they are a smarter buy than conventional vehicles.
• B. Conventional vehicles are faster but hybrid vehicles are better for the environment.
• C. Conventional vehicles may be more powerful than hybrid vehicles but hybrid vehicles are more socially responsible.
• D. Since hybrid vehicles use less gasoline and put fewer emissions into the atmosphere, they are better for the environment.