Which degradation process would Mughal-era 'pietra dura' inlays, subjected to fluctuating sub-surface Himalayan river conditions, primarily exhibit?

💡 Explanation

Differential thermal expansion cycles cause stress because different inlay materials expand and contract at varying rates under temperature changes—a form of cyclic fatigue. Therefore, the assembly degrades progressively via induced stresses, rather than corrosion or bio-degradation in this thermal environment.

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