Q: In a hot water heater, burning fuel causes the water to get hot because combustion is what type of reaction?


Read this paragraph and choose the correct option from the provided answers:

A: A hot water heater increases the temperature of water in most homes. Many hot water heaters burn a fuel such as natural gas. The burning fuel causes the water to get hot because combustion is an exothermic reaction.

 Choices:

- endothermic

- geothermal

- biochemical

- exothermic


A:
exothermic