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← GeographyUpriver sediment load decrease causes increased channel sinuosity, producing which feature?
A)Exaggerated oxbow lake formation✓
B)Braided stream channel instability
C)Alluvial fan deposition increase
D)Accelerated levee weakening effects
💡 Explanation
Reduced competent sediment transport downstream causes increased meandering, specifically lateral erosion creating river loops, accelerating the **avulsion process**; therefore exaggerated oxbow formation results, rather than braiding or deposition increases, which relate to different flow characteristics.
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