What is the correct relation between river deposition and floods in the Northern Plains?

Correct answer: During floods, rivers can spread new deposits

Direct answer: Option A is correct. During floods, a river carries a large amount of suspended silt, sand and other sediment. When the water spreads over the floodplain and its speed decreases, the river loses some carrying power and deposits this material on the land. Repeated deposition builds and renews alluvial soil, especially Khadar on the active floodplain. Option A works because it states this direct relationship between flooding and fresh river deposits. Option B is wrong because coral forms mainly in suitable shallow marine environments through organisms, not because of ordinary river floods. Option C is wrong because floods cannot turn the Deccan Plateau into a glacier; glaciers require long-lasting freezing conditions and ice accumulation. Option D is wrong because floods do not only form sea islands; they commonly deposit sediment on inland floodplains and may also build deltas. The important chain is: heavy rain or high flow, overflow, slower water, sediment deposition, renewed alluvium. Memory cue: “Floodwater slows, fresh silt grows.”