Rivers that have developed over a long period of time are found in wide valleys with flat, low-lying bottoms. These valleys were created by the removal of rock and soil through the process of _______.
A.
glaciation
B.
erosion
C.
weathering
It's C. Erosion. Erosion is the process of carrying rock and soil and many other things to different places. Hope this helps and please hit that mark brainliest if it did.