Answer the following question given this paragraph: 

All of the land drained by a river system is called its basin, or watershed. One river system’s basin is separated from another river system’s basin by a divide. The divide is created by the highest points between the two river basins. Precipitation that falls within a river basin always flows toward that river. Precipitation that falls on the other side of the divide flows toward a different river.


Q: All of the land drained by a river system is called its basin, or what "wet" term?

 Choices:

- river bank

- groundwater

- wetlands

- watershed

A:
watershed
