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Which consequence arises where differential thermal expansion occurs in unreinforced Inca stonework?

A)Localized stress exceeds material's tensile strength
B)Alkali-silica reaction induces concrete swelling
C)Capillary action saturates internal wall matrix
D)Seismic frequency generates material resonance

💡 Explanation

Cracking occurs due to differential thermal expansion because temperature variations cause stones to expand and contract at different rates. Localized stress then exceeds the material's tensile strength in areas of high constraint, therefore causing cracks rather than swelling/saturation from other causes.

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