You are presented with the question "What would remain if you were to make a pot of salt water start to steam?" and the following answer choices: 
- heat
 - oxygen
 - carbon
 - fluid
 - liquid
 - water
 - algae
 - salt

Now knowing that heating salt water causes the water to evaporate while the salt remains and maybe the fillings evaporated during steaming, choose the best answer.


 

        salt 