Around braided rivers, which risk increases along alluvial fans due to avulsion events?

💡 Explanation

When a braided river flows onto an alluvial fan, avulsion occurs because rapid sediment deposition causes channel instability, leading to the river abruptly jumping to a new course. Therefore, unpredictable channel migration pathways result, rather than the other options, which are associated with different geological processes separate from avulsion along alluvial fans.

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