Answer:
The statement that best expresses the main conclusion of the argument is:
Primary buyers of battery-powered cars are those concerned with the environment.
Explanation:
From the surveys, we can see that the people that buy battery-powered cars are concerned about the long-term effect of pollution on the environment.
We can also see that these people are more likely to use energy-saving appliances at home and people that use other cars.
These statements show that the people more likely to buy battery-powered cars are concerned with the environment.