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Which destructive outcome likely appears in exterior Mughal pietra dura inlay exposed to freeze-thaw conditions?

A)Differential thermal expansion cracking
B)Increased biotic material growth
C)Accelerated airborne particulate soiling
D)Widespread irreversible surface yellowing

💡 Explanation

Freeze-thaw cycles cause differential thermal expansion cracking because the inlay materials (e.g., marble, gemstones) expand and contract at different rates. Therefore, cracks form around connections, rather than uniform deformation because the expansions are mismatched.

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