Which risk increases when a Roman road's drainage ditches become blocked with debris?

💡 Explanation

When drainage ditches are blocked, water infiltrates the road structure because capillary action is unimpeded, causing the road base to saturate, which then induces freeze-thaw damage during temperature variations, initiating potholes. Therefore, pothole formation, rather than other mechanisms occurs as it requires freeze-thaw cycles enabled by blocked drainage.

• Which limitation was encountered when early Islamic astronomers attempted to improve astrolabe accuracy using higher magnification lenses?
• Which risk increases when a Roman fort's wooden palisade suffers prolonged water absorption?
• Which problem occurred frequently when ancient Mesopotamian irrigation canals silted up with sediment?
• Which outcome occurred when pre-Columbian civilizations over-cultivated terraces on steep Andean slopes?
• Which limitation constrained Mesopotamian bronze tools subjected to repeated earth tilling in arid soil?
• Which consequence results from inaccuracies in Ptolemy's geocentric model when predicting planetary positions?