You are presented with the question "What causes holes in the ozone?" and the following answer choices: 
- Thunderstorms
 - flooding
 - Pollution
 - Sun damage
 - vaporization
 - influenza
 - rays or beams
 - Wind

Now knowing that using a car causes pollution and harmful emissions from cars are largely responsible for the giant holes in the ozone layer, choose the best answer.


 

   Pollution      