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← GeographyWhich outcome occurs when a volcanic cinder cone erodes rapidly?
A)Formation of a lava ventilation tube
B)Development of a volcanic lahar✓
C)Increased rate of carbon sequestration
D)Stabilization of regional crustal subsidence
💡 Explanation
Rapid cone erosion saturates soil leading to debris flow because high rainfalls mix ash/tephra with water during erosion, forming a lahar via **mass wasting**. Therefore, a lahar develops rather than a lava tube or crustal stabilisation since those need different conditions.
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