stop flowing. create waves. move faster and cleaner. become deeper and wider.
I gave my students this multiple choice question: Over a long period of time, running water in a river erodes the riverbed. This erosion causes the river to

Only one answer is correct among these 4 choices:
- stop flowing.
- create waves.
- move faster and cleaner.
- become deeper and wider.

Could you tell me which one is correct?

become deeper and wider.