Q: You are presented with the quiz "What decreases the freezing point of ice?" 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 "ice is the solid form of water". So, what's the best answer to the question?

Options are:
a). hyperthyroidism.
b). increasing temperature.
c). heating liquids.
d). lowering temperature.
e). Dehydration.
f). keeping the temperature steady.
g). adding salt.
h). hypothyroidism.
A:
g).