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← HistoryWhich risk increases when seasonal ground freeze impacts water delivery beneath Mughal gardens embedding 'pietra dura'?
A)Piping shifts disrupt inlay alignment✓
B)Algae growth accelerates stone decay
C)Water erosion degrades mortar sealants
D)Biofilms stain surfaces unevenly
💡 Explanation
A combination effect occurs because Ice lens formation causes soil expansion beneath the 'pietra dura' installations employing freeze-thaw action leading to subsurface disruption; therefore tiled artwork shifts rather than sustaining uniform frost heave, as continuous slabs might.
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