Which circumstance most endangers the function of Trajan's Aqueduct?

💡 Explanation

Seismic events strain the keystone, which leads to arch COLLAPSE, because this concentrated stress breaks connections therefore losing structural stability rather than gradual effects from deposition that water filtration usually remediated during construction.

• Which mechanism limited the maximum height of early Egyptian obelisks despite stable base design?
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• Which consequence occurs when a sextant's horizon mirror drifts out of perpendicular alignment?
• Which consequence resulted when early Aztec terrace-farming over-intensified?
• Which outcome results when the alidade pinhole misalignment error systematically appears on a historical astrolabe?
• Which consequence results when early Chinese blast furnaces used coke from coal rather than charcoal for smelting?