39. Goitre is due to the deficiency of A.Calcium B.Zinc C.Selenium D.Iodine
Answer: Option D Solution: The most common cause of goiters worldwide is a lack of iodine in the diet. In the United States, where the use of iodized salt is common, a goiter is more often due to the over- or underproduction of thyroid hormones or to nodules in the gland itself.
