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← HistoryWhich consequence results when ichu-grass rope decays excessively on a historic Inca suspension bridge?
A)Increased bridge deck aerodynamic instability
B)Reduced tensile strength integrity capacity✓
C)Elevated natural harmonic bridge frequency
D)Decreased thermal expansion amplitude range
💡 Explanation
Reduced tensile strength integrity occurs when the ichu grass comprising Inca bridge ropes decays, weakening under load; because the load-bearing capacity plummets due to MATERIAL DEGRADATION. Therefore, integrity decays, rather than other structural changes, given this specific mechanism affecting the core material.
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