River systems on the western side of the rocky mountains flow into the pacific ocean/ river systems on the eastern side of the rocky mountains flow in the opposite direction, into the atlantic ocean. what are the rocky mountains called?
a. drainage basin
b. a divide
c. a terrance
d. a floodplain

Option B i.e A Divide is the correct answer.

The Rocky mountains are also called a Divide or Continental Divide of Americas because these mountains separate river system flow in the pacific ocean and the river system which flows in the Atlantic ocean. The Continental divide is also called as the Great Divide.

it is b

explanation: mark brainliest because i am trying to get to the next level and i just need 1 more