Flood plains are related to which work of a river?

Correct answer: Deposition

Direct answer: D, deposition. A flood plain is a broad, fairly flat area beside a river, built mainly when floods spread water and leave layers of fine alluvium. The chain is: heavy rain or high discharge raises the river; water leaves the channel; its velocity decreases over the nearby land; suspended silt and clay settle; repeated floods build a flat plain. D names this process. A, volcanic eruption, creates volcanic landforms, not ordinary flood plains. B, a sea earthquake, may create coastal effects but is not the river process that forms a flood plain. C, uplift of the Himalayas, may influence river gradients but does not directly build the plain. Remember: flood water slows and deposits fine sediment, producing a flood plain.