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Geography

Which depositional outcome occurs where a deeply entrenched river emerges onto a broad alluvial plain?

A)Formation of an alluvial fan
B)Development of a braided stream
C)Creation of oxbow lakes
D)Increased river sinuosity

💡 Explanation

An alluvial fan results from a rapid decrease in stream gradient causing sediment deposition via aggradation; therefore, the flow spreads out, rather than incising further because energy decreases, limiting erosion capacity.

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