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← GeographyWhich outcome happens when rapid alluvial deposition occurs?
A)Increased erosion of upstream highlands
B)Accelerated chemical weathering of feldspars
C)Formation of braided stream channels✓
D)Decreased soil permeability on floodplains
💡 Explanation
Braided streams form, often in alluvial fans, when sediment load exceeds the stream's transport capacity; this is **aggradation**. Because the water then divides around the accumulating sediment bars, forming an intertwined pattern, rather than resulting in stable, single-thread meanders.
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