Matilda, with hyperthyroidism, is to receive Lugol’s iodine solution before a subtotal thyroidectomy is performed. The nurse is aware that this medication is given to:

A Decrease the total basal metabolic rate.
B Maintain the function of the parathyroid glands.
C Block the formation of thyroxine by the thyroid gland.
D Decrease the size and vascularity of the thyroid gland.