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← GeographyWhich consequence results when prolonged drought precedes heavy rain in karst regions with significant subsurface void space?
A)Increased carbonate sediment deposition rate
B)Accelerated sinkhole formation and collapse✓
C)Enhanced speleothem (cave formation) growth
D)Decreased surface water infiltration volume
💡 Explanation
Sinkhole formation accelerates because drought shrinks clay soils supporting subsurface voids, and subsequent rain causes rapid saturated soil, exceeding clay strength; therefore, collapse occurs rather than slow carbonate deposition due to groundwater processes.
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