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← HistoryWhich outcome occurs when differential thermal expansion stresses Incan masonry?
A)Progressive joint displacement and subsidence✓
B)Homogenous internal micro-crack formation
C)Complete structural tensile disintegration
D)Decreased surface albedo reflectivity
💡 Explanation
Progressive joint displacement and subsidence is the outcome. Diurnal temperature cycles cause differing expansion rates, and `ratcheting` occurs at the joints because blocks don't perfectly return to their original position after each cycle. Therefore, displacement slowly accumulates, rather than immediate tensile failure.
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