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← GeographyWhich outcome is driven by lahar fluid dynamics?
A)Valley widening and stratified deposition✓
B)Crater formation and magma convection
C)Tsunami generation and coastal erosion
D)Ash cloud formation and atmospheric dispersion
💡 Explanation
Widespread valley widening and sediment deposition occur because lahar fluid dynamics involve high-density mudflows eroding lateral banks and solidifying across broad floodplains. Therefore, broad stratified layers are produced, rather than tsunami generation, which has different causes.
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