A nurse is caring for a client who has hypoparathyroidism. Which of the following findings should indicate to the nurse that the treatment is effective?

A. Calcium 9.6 mg/dL (9 to 10.5 mg/dL): Treatment involves calcium and vitamin D supplementation to restore normal calcium levels. A calcium level of 9.6 mg/dL is within the normal range, indicating that the treatment is effective in correcting the calcium deficiency. B. Glucose 96 mg/dL (74 to 106 mg/dL): Blood glucose is not directly related to the management of hypoparathyroidism. The glucose level being within normal range does not provide information about the effectiveness of treatment for hypoparathyroidism. C. Potassium 4.3 mEq/L (3.5 to 5 mEq/L): Potassium levels are not directly affected by hypoparathyroidism. This value is within the normal range but does not indicate the effectiveness of treatment for hypoparathyroidism specifically. D. Sodium 142 mEq/L (136 to 145 mEq/L): Sodium levels are not typically influenced by hypoparathyroidism or its treatment. This value is within normal range but does not indicate the effectiveness of treatment for hypoparathyroidism.