Q. The deficiency of which of the following minerals causes goiter?
Answer: Iodine
Notes: A goiter is an enlarged thyroid gland that causes the neck to swell. Iodine deficiency is the major cause of goiter worldwide. The thyroid gland needs iodine to manufacture thyroid hormones, which regulate the metabolism.
Goiter is often harmless but symptoms can occur, and treatment may be required depending on the size and type of goiter.