You are presented with the question "What can cause temperature fluctuations." and the following answer choices: 
- mountain formations
 - remove toxic material from the stomach before it is absorbed
 - ocean tides
 - trees growing
 - Something that can be converted to kinetic and heat energy by a motor
 - keeping food fresh for long periods of time
 - water vapor rising into colder regions of the atmosphere and condensing
 - skin redness and pain, possible swelling, blisters, fever, headaches

Now knowing that clouds are formed by water vapor rising into colder regions of the atmosphere and condensing and cloud cover and precipitation  cause temperature fluctuations, choose the best answer.


 

       water vapor rising into colder regions of the atmosphere and condensing  