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← GeographyWhich outcome results when a coastal bluff experiences undercutting due to wave-driven, sediment-laden longshore drift?
A)Increased slope instability and bluff collapse✓
B)Decreased sediment supply along the shoreline
C)Emergence of a tombolo landform
D)Enhanced dune formation at the bluff's crest
💡 Explanation
Increased slope instability results because basal erosion via hydraulic action removes supporting material, therefore over-steepening the slope and increasing the likelihood of a landslide or bluff collapse, rather than promoting dune formation which requires sediment deposition.
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