Fact 1: Freezing means changing from a liquid into a solid by reducing heat energy.

Fact 2: Water freezes into ice when cooled.

Given the two facts above, answer the question "What turns from a liquid into a solid?" with the following options: 
- ice
 - heated water
 - kinetic energy
 - fossil fuels
 - solid, liquid, gas
 - Calcium carbonate
 - cooled water
 - superheated water


 

       cooled water  