You are presented with the question "what deposits soil in flood plains when it floods?" and the following answer choices: 
- the Colorado
 - the Pacific Ocean
 - water evaporation
 - bullfrogs
 - peachleaf willow
 - a hydraulic system
 - mussels
 - hydrogen

Now knowing that when a river floods , that river deposits soil in flood plains and major river is the Colorado river, choose the best answer.


 

 the Colorado        