How does flooding affect rivers?

a. It causes river bends to be cut off.

b. It picks up deposits from floodplains.

c. It causes rivers to divert.

d. It causes river channels to change shape.

Floods are natural events. They mainly happen when the river catchment, (that is the area of land that feeds water into the river and the streams that flow into the main river) receives greater than usual amounts of water (for example through rainfall or melting snow).

D. It causes river channels to change shape.

This is the correct answer.