Which process accelerates oxbow lake formation when tectonic subsidence lowers floodplain elevation?

💡 Explanation

When tectonic subsidence lowers floodplain elevation, river's gradient decreases, increasing sinuosity and intensifying lateral erosion on meander bends as the river seeks the steepest course. Therefore, increased erosion accelerates oxbow formation, rather than deposition rate decrease, or enhanced evapotranspiration/recharge which don't create cutoffs.

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