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← HistoryWhich consequence occurs if excessive moisture permeates centuries-old Mughal 'Pietra Dura'?
A)Colorant migration within stone matrices✓
B)Accelerated oxidation forms spectral iridescence
C)Increased structural bulk modulus emerges
D)Enhanced radiation shielding characteristics develop
💡 Explanation
Colorant migration results because water acts as a *capillary transport agent*, carrying soluble salts. Therefore, colors diffuse and blur, rather than retaining sharp boundaries of the original 'pietra dura' due to differential solubility amongst the mineral species.
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