Option is the correct answer because parathyroid hormone is a hypercalcemic hormone, which means it raises blood calcium levels. It also improves calcium absorption from digested food. Glucocorticoids regulate the carbohydrate metabolism.

Option is not true because parathyroid hormone stimulates the process of bone resorption,

Option and are not true because reabsorption of Ca 2+ by renal tubules is a function of PTH.

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