Answer the following question given this paragraph: 

Some precipitation that falls on land soaks into the ground. This water becomes groundwater. Groundwater may seep out of the ground at a spring or into a body of water such as the ocean. Some groundwater is taken up by plant roots. Some may flow deeper underground to an aquifer. An aquifer is an underground layer of rock that stores water. Water may be stored in an aquifer for thousands of years.


Q: Where does groundwater primarily come from?

 Choices:

- erosion

- evaporation

- sediment

- precipitation

A:
precipitation
