A second feature of H2O molecules is that they behave differently from most molecule when heated or cooled.
Most materials expand when heated and contract when
cooled. Water contracts when cooled until reaches 4°C.
(Water freezes at 0° Celsius.) As it continues to cool, water
reverses and begins to expand.

what is the comparison inherent in this paragraph?

A. At freezing , h2O molecules expand rather than contract as most molecules .

B. H2O molecules behave different from other molecules.

C. Most molecules expand when heater & contract when cooled .