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← HistoryWhich of these outcomes during prolonged extreme heat risk is highest concerning Mughal-era pietra dura?
A)Differential thermal expansion fractures✓
B)Lime mortar turns hygroscopic slowly
C)Marble aggregate begins rapid sublimation
D)Settlement causes catastrophic point load
💡 Explanation
Differential expansions of materials with temperature changes causes stress because pietra dura contains stones with varying expansion coefficients; therefore fracturing occurs rather than any form of point load because mortar integrity loss proceeds far more slowly.
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