You are presented with the question "converting gasoline into motion cause what" and the following answer choices: 
- Dehydration
 - elections
 - global debt
 - friction
 - dangerous
 - pollution
 - Firecrackers
 - traffic jams

Now knowing that agasoline lawn mower converts gasoline into motion and small engines, such as in lawn mowers, pollute at a high rate, choose the best answer.


 

      pollution   