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Which outcome occurs when the pietra dura inlay of Mughal gardens experiences fluctuating humidity?

A)Differential thermal expansion weakens bond
B)Microbial growth enhances color vibrancy
C)Oxidation strengthens structural integrity
D)Capillary action improves joint adhesion

💡 Explanation

Differential thermal expansion causes the delicate inlay stones to expand/contract at different rates than the surrounding marble, weakening the adhesive bond because of cyclic stress. Therefore, the bond fails rather than strengthening, enhancing color, or improving adhesion, due to mechanical stress caused by inconsistent expansion.

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