The greatest contributor to air pollution is private vehicle use.
each vehicle is estimated to stay on the road for roughly 12 to 15 years.
hybrid cars combine a gasoline engine with a battery-powered electric motor.
hybrid cars are proven to reduce emissions by up to 90 percent.
which thesis statement do these details support?

a.
hybrid cars are an effective strategy to fight pollution.

b.
the nation should focus on using mass transit systems.

c.
cars are a large source of air pollution.

d.
cars generally have a long lifespan.