How is earths surface likely to change when a river flows over a steep landscape?

A narrow valley is formed. Hope this helps :)

Its channel becomes narrow and deeper.

This causes a lot of erosion and very little deposition. The rapidly falling water digs down into the stream bed and makes it deeper. It carves a narrow, V-shaped channel.

Yes i do hahahahahhaha

The correct answer:   [c]:   "cell phone call" .