If a river mouth is wide silty and divided into distributaries what landform does it indicate?

Correct answer: Delta

The direct answer is C: the landform is a delta. A delta forms where a river reaches a sea or lake, loses speed, and deposits sediment such as silt, sand, and clay. Step by step: the river carries sediment downstream; at the mouth, the water becomes slower and spreads into the receiving water body; the sediment settles; repeated deposition builds low land; the river divides into distributaries that flow around the deposits. A wide, silty mouth divided into distributaries is therefore a strong sign of a delta. Option A, a waterfall, is a steep drop in a river channel, not a sediment-built branching mouth. Option B, a glacier, is a mass of moving ice, not a river-mouth landform. Option C is correct because it matches both deposition and distributaries. Option D, a pass, is a route or low gap through mountains and is unrelated to a river mouth. Exam cue: river mouth plus deposited silt and distributaries usually means delta.