You are presented with the question "Adding sodium chloride to a solid does what?" and the following answer choices: 
- chemical reaction
 - decreases the freezing point
 - a hemisphere is tilted away from the sun
 - heat production
 - reusing materials
 - water conservation
 - It gets heated up
 - massive damage

Now knowing that adding salt to a solid decreases the freezing point of that solid and salt is sodium chloride, choose the best answer.


 

  decreases the freezing point       