It is rainy season! rivers are more muddy looking during storms. all but one statement to explain this occurrence. a. a swiftly moving river will have more water. b. sediment builds up at on the river bottom and the river looks muddy. c. during a storm, a river is carrying a lot more sediment than during a low flow period d. fast-moving water can pick up, suspend, and more larger particle more than easily than slow moving waters.