You are presented with the quiz "What happens to salt in seawater as it freezes at the freezing point?" 

But you don't know the answer, so you turn to your teacher to ask for hints. He says that "adding salt to a solid decreases the freezing point of that solid" and "when seawater freezes, salt is expelled from the solid in a concentrated salt solution called brine". 

So, what's the best answer to the question?


 

   expelled        