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← GeographyWhich hazard most directly results when large concentrations of tephra are remobilized downslope after initial deposition?
A)Secondary lahar formation✓
B)Pyroclastic surge propagation
C)Caldera collapse acceleration
D)Enhanced ash cloud electrification
💡 Explanation
Secondary lahars form through the remobilization of deposited tephra by rainfall or meltwater creating mudflows, because water entrains loose ash creating a dense slurry; therefore lahars are the direct outcome rather than other volcanic processes.
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