You are presented with the question "What can water cause?" and the following answer choices: 
- exposure to cold
 - The bending of a ray of light
 - atmospheric depletion
 - pressure differences.
 - decreases the freezing point
 - negative impact
 - wind and erosion
 - a lot of human deaths

Now knowing that water causes refraction of light and refraction is the bending of a ray of light, choose the best answer.


 

  The bending of a ray of light       