In which patient will the nurse expect to see a positive Chvostek's sign?

Rationale: A. Hyperparathyroidism typically causes hypercalcemia, which would not result in a positive Chvostek’s sign. B. Severe burns can cause fluid and electrolyte imbalances, including hypocalcemia, but it's less specific than option C. C. Chronic alcohol abuse can lead to hypocalcemia and hypomagnesemia, which are known causes of a positive Chvostek’s sign, a clinical sign of neuromuscular irritability due to low calcium levels. D. Osteoporosis may be related to chronic calcium deficiency, but it does not directly cause the acute hypocalcemia needed to produce a positive Chvostek’s sign.