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← HistoryDuring harsh winters at the Taj Mahal, which degradation accelerates in the pietra dura inlay?
A)Differential thermal expansion causes cracking✓
B)Acid rain dissolves marble layers
C)Microbial growth erodes softer stones
D)Oxidation darkens metal accents
💡 Explanation
Differential thermal expansion weakens weaker bonds between inlaid stones because differing coefficients of expansion within pietra dura lead to stress and cracking under rapid temp changes, therefore initiating surface deterioration, rather than chemical dissolution or biological erosion that affect different materials.
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