Question

The burning of coal to generate electricity has been good in some ways and bad in others. The electricity has allowed for an improvement in many areas of life, but the burning of coal is also responsible for a great deal of pollution. Which activity helps solve the pollution problem through the use of new technology?
A. Building more coal power plants
B. Convincing people to use less electricity
C. Building power plants that give off less pollution
D. Convincing people to use more electricity

Answer 1

C

Answer 2

and B too

Answer 3

is b or c ???