Answer :
Option B; Natural levees formed Suspended load is deposited when the river covers the floodplain.
Usually, earth is used to construct levees. Sediment is forced to the side by the natural flow of a body of water, forming a natural levee. Frequently, a river's banks rise up from the river bed just a little bit . Sediment, silt, and other materials pushed aside by the rushing water are accumulated along the banks to form levees. A natural levee may be the intersection of the flood plain and the channel (a broad, low ridge of built along the side of a channel by debris- laden floodwater). When floodwater that is clogged with debris overflows a channel and goes into a floodplain, a levee is formed.
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