Why does salt dissolve in water act as an antifreeze?
a. Because the freezing point of a solution decreases below that of the solvent as solute is added.
b. Because the boiling point of a solution increases above that of the solvent as solute is added.
c. Because the freezing point of a solution increases above that of the solvent as solute is added.
d. Because the boiling point of a solution decreases below that of the solvent as solute is added.