Which statement about iodine and the thyroid gland is true?
a. Without iodine, thyroid hormones cannot be made, causing the thyroid gland to enlarge.
b. Iodine deficiency increases the production of thyroid hormones.
c. Metabolic rate increases with insufficient thyroid hormones.
d. More than three-fourths of the iodine in the body is located in the thyroid gland.
Ans: a. Without iodine, thyroid hormones cannot be made, causing the thyroid gland to enlarge.
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