You are presented with the question "What decreases the melting point of water?" and the following answer choices: 
- forces
 - Dilution
 - erosion
 - Heat energy
 - chilling water
 - heating water
 - reading books
 - adding salt

Now knowing that adding salt to a liquid decreases the melting point of that liquid and water is also a liquid, choose the best answer.


 

        adding salt 