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← HistoryWhich outcome occurs after an extended drought stresses 17th-century Mughal garden aqueducts?
A)Salt accumulation in porous sandstone✓
B)Increased ornamental fountain performance
C)Strengthened mortar due to hydration
D)Decreased risk of pietra dura damage
💡 Explanation
Salt efflorescence increases because sustained evaporation via capillary action causes dissolved salts to migrate and precipitate on sandstone surfaces above channels via capillary action. This increases structural stresses, therefore weakening the stone, rather than strengthening it.
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