Options:
(A). freezing water
(B). Dehydration
(C). reading books
(D). Evaporation
(E). prolonged thirst
(F). breathing air
(G). cooking soup
(H). rain or sun shine

Fact 1: Boiling means change from a liquid into a gas by adding heat energy. Fact 2: For a smoother flavor, bring soup to a boil. Given the two facts above, changing from liquid to gas by adding heat energy occurs during what?
Answer:
(G).