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← HistoryWhich risk increased with suspension bridge rope improvements?
A)Undulation due to aerodynamic instability✓
B)Material fatigue due to increased stress
C)Electrolysis due to dissimilar metal joints
D)Buckling due to compressive force
💡 Explanation
Suspending larger spans was plausible when better ropes appeared; increased length made Resonance, therefore undulation more likely, rather than simple breakage or galvanic corrossion because these were already understood limitations.
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