You are presented with the question "What is formed when water vapor condenses in the air?" and the following answer choices: 
- NaCl
 - a wave
 - ice
 - rain
 - clear skies
 - sweat
 - haze
 - rocks

Now knowing that fog is formed by water vapor condensing in the air and but suddenly a fog, a haze, began to form, choose the best answer.


 

       haze  