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Which constraint limits the size composition in pietra dura?

A)Thermal stress from coefficient mismatch
B)Delamination due to moisture absorption
C)Discoloration from ultraviolet radiation
D)Erosion by wind carrying small particulates

💡 Explanation

Thermal stress occurs because the thermal expansion coefficients for different inlaid materials are dissimilar, leading to stress concentration and cracking causing the adhesive bond to shear; therefore, size and material pairings must be controlled rather than tolerating excessive stress.

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