To change a substance from a liquid to a solid, it must be cooled to its O A. boiling point
O B. melting point
C. coefficient of heat
OD. specific heat
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B.  melting point

Explanation:

The melting point is the same as the freezing point.  This temperature is when a liquid freezes and becomes a solid, and it is also when a solid melts and becomes a liquid.  This is why freezers are set at temperatures lower than the freezing point of water.

boiling point

Explanation:

hope this helps

false

because it does not have the potential to be entirely used up