Answer the following question given this paragraph: 

Most groundwater does not flow out of an aquifer as a spring or geyser. So to use the water that's stored in an aquifer, people must go after it. How? They dig a well. A well ( Figure below ) is a hole that is dug or drilled through the ground down to an aquifer.


Q: What is a hole that is dug or drilled through the ground down to an aquifer called?

 Choices:

- moat

- ditch

- canal

- well

A:
well
