Answer the following question given this paragraph: 

Energy in a body of water can be gained or lost depending on conditions. When water is heated above a certain temperature steam is generated. The increase in heat energy creates a higher level of disorder in the water molecules as they boil off and leave the liquid.


Q: What do you need to do to water to make it steam?

 Choices:

- freeze it

- stir it

- cool it

- heat it

A:
heat it
