Kim: Some people claim that the battery-powered electric car represents a potential solution to the problem of air pollution. But they forget that it takes electricity to recharge batteries and that most of our electricity is generated by burning polluting fossil fuels. Increasing the number of electric cars on the road would require building more generating facilities since current facilities are operating at maximum capacity. So even if all of the gasoline-powered cars on the roads today were replaced by electric cars, it would at best be an exchange of one source of fossil-fuel pollution for another.
3. The main point made in Kim’s argument is that
(A) replacing gasoline-powered cars with battery-powered electric cars will require building more generating facilities
(B) a significant reduction in air pollution cannot be achieved unless people drive less
(C) all forms of automobile transportation are equally harmful to the environment in terms of the air pollution they produce
(D) battery-powered electric cars are not a viable solution to the air-pollution problem
(E) gasoline-powered cars will probably remain a common means of transportation for the foreseeable future
4. Which one of the following is an assumption on which Kim’s argument depends?
(A) Replacing gasoline-powered cars with battery-powered electric cars will lead to a net increase in the total number of cars on the road.
(B) Gasoline-powered cars are currently not the most significant source of fossil-fuel pollution.
(C) Replacing gasoline-powered cars with battery-powered electric cars is justified only if electric cars produce less air pollution.
(D) While it is being operated, a battery-powered electric car does not cause any significant air pollution.
(E) At least some of the generating facilities built to meet the demand for electricity for battery-powered electric cars would be of a type that burns fossil fuel.