Fact 1: Adding salt to a liquid decreases the melting point of that liquid. Fact 2: Impurities like salts would also help by lowering the melting point. Given the two facts above, what decreases the melting point of liquid?
Possible answers:
(a). Dilution
(b). Impurities
(c). Water expanding
(d). Dehydration
(e). Heat energy
(f). Pollution
(g). Time and energy
(h). evaporation
(b).