You are presented with the question "What decreases the freezing point of ice?" and the following answer choices: 
- hyperthyroidism
 - increasing temperature
 - heating liquids
 - lowering temperature
 - Dehydration
 - keeping the temperature steady
 - adding salt
 - hypothyroidism

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


 

       adding salt  