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← GeographyWhich outcome during stratovolcano eruption increases landslide risk?
A)Lahars erode the existing slopes
B)Heavy ashfall obstructs river channels
C)Pyroclastic flows inflate structures✓
D)Tephra fall compact under pressure
💡 Explanation
Pyroclastic flow deposition often results in agglutination causing Inflation from fumarole activity. This adds mass and volume to unstable conical edifices, stressing slopes thereby increasing the risk of sector collapse rather than other erosional factors.
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