You are presented with the question "Dew is formed when water vapor is what?" and the following answer choices: 
- uncontrolled
 - smoked outdoors
 - frozen at once
 - major threat to health
 - aqueous solution
 - It gets heated up
 - cooled at night
 - chilled inside

Now knowing that dew is formed when water vapor condenses over night and condensation on roofs at night is common in cooler weather, choose the best answer.


 

       cooled at night  