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During Mughal-era construction requiring 'pietra dura' inlay, which environmental risk limited precise stone fitting?

A)Hygroscopic material dimensional instability
B)Seismic induced vibration cracking
C)Freeze-thaw cycle mortar degradation
D)Salt efflorescence surface disintegration

💡 Explanation

Hygroscopic expansion/contraction of the stone influenced 'pietra dura', because the inlaid materials absorbed atmospheric moisture, causing dimensional instability. Therefore, highly controlled humidity minimized expansion mismatch effects, rather than seismic effects or other weathering.

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