Fact 1: Fog is formed by water vapor condensing in the air.

Fact 2: But suddenly a fog, a haze, began to form.

Given the two facts above, answer the question "What is formed when water vapor condenses in the air?" with the following options: 
- NaCl
 - a wave
 - ice
 - rain
 - clear skies
 - sweat
 - haze
 - rocks


 

       haze  