A river widens, slows, and becomes shallow at the location pictured below.
How are the landforms pictured above being changed?
A. Sediment from downriver is being eroded by the slow, shallow waters.
B. Physical weathering is building up the landforms bordering the river.
C. Chemical weathering is building up the landforms bordering the river.
D. Sediment from upriver is being deposited by the slow, shallow waters.