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Which risk increases significantly when crystal lattice regularity degrades?

A)Decreased carrier mobility occurs
B)Increased thermal conductivity dominates
C)Augmented piezoelectric effect arises
D)Enhanced optical transparency results

💡 Explanation

Decreased carrier mobility increases because deviations from perfectly ordered lattices scatter electrons during transport, and Bloch waves cannot propagate without disruption. Therefore mobility lessens rather than alternatives involving unaffected thermal or electromagnetic properties, because those are governed by secondary contributions.

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