Which risk increased when excessive hydrostatic pressure built within the foundation of Mughal garden fountains that incorporated elaborate pietra dura inlays?

💡 Explanation

Increased settling and differential subsidence occurred because the hydrostatic pressure weakened the foundational mortar, initiating consolidation settlement under load. This caused uneven support that fractured the rigid pietra dura inlays, therefore undermining the garden's aesthetic integrity rather than other environmental degradation modes.

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