Fact 1: Carpooling decreases the amount of cars used to travel to a place.

Fact 2: Car crashes also create traffic congestion and greatly disrupt travel for commuters.

Given the two facts above, answer the question "Carpooling does what to the amount of cars and traffic congestion?" with the following options: 
- improve
 - Riding a bike
 - uncontrolled
 - reduced heat
 - stalls
 - slows
 - increases
 - decreases


 

        decreases 