Answer:
There are two statements that can better express the main conclusion of the above argument:
1. People concerned with the environment are likely to use energy-saving appliances.
2. Primary buyers of battery-powered cars are those concerned with the environment.
Step-by-step explanation:
It is correct to say that both statements express the main conclusion of the above argument.
In the first premise it is said that "People concerned about the environment are the main buyers of battery-powered cars."
In the second premise, it is said that: "people with battery-powered cars, compared to others, are more likely to use energy-saving appliances at home."
Therefore, it is possible to conclude that the main buyers of battery-powered cars are those who care about the environment and also those who save energy at home.