You are presented with the question "A beneficial effect of carpooling is" and the following answer choices: 
- animal transport
 - increased water pollution
 - more beneficial emissions
 - reduced air pollution
 - lowered energy cost
 - staying warm
 - lower gas mileage
 - it keeps an organism warm

Now knowing that carpooling decreases the amount of cars used to travel to a place and cars are a significant source of air pollution, choose the best answer.


 

    reduced air pollution     