Why do some states require emissions testing? A.
to reduce air pollution
B.
to reduce water pollution
C.
to conserve energy resources
D.
to increase fuel efficiency

Please select the best answer from the choices provided

A

Explanation:

If you live in a region where emissions tests are required, you have to bring your car to a testing station once a year, or once every other year, to ensure that it's producing minimal levels of pollutants. If your vehicle fails an emissions test you are required to have the car repaired.

your answer would be (a)