You are presented with the question "By changing a gas into a liquid, how is condensing achieved?" and the following answer choices: 
- Water expanding
 - lowering the temperature
 - blowing on it
 - taking the temperature
 - heat is produced
 - heat production
 - permineralization
 - stirring a liquid

Now knowing that condensing means changing from a gas into a liquid by reducing heat energy and lower energy means lower temperature, choose the best answer.


 

  lowering the temperature       