You are presented with the question "What do you add to decrease the melting point of a liquid?" and the following answer choices: 
- salinity
 - Dehydration
 - Heat energy
 - sodium chloride
 - layers of fat
 - chemical changes
 - evaporation
 - aqueous solution

Now knowing that adding salt to a liquid decreases the melting point of that liquid and sodium Chloride: It is a table salt , choose the best answer.


 

    sodium chloride     