The correct answer is C. Iodine.
Goitre is a condition in which the thyroid gland becomes enlarged. The thyroid gland is a butterfly-shaped gland in the neck that produces hormones that regulate metabolism, growth, and development.
Goitre can be caused by a number of factors, including iodine deficiency, autoimmune disorders, and certain medications. Iodine deficiency is the most common cause of goitre worldwide.
Iodine is a mineral that is essential for the production of thyroid hormones. Iodine is found in seafood, dairy products, and some vegetables.
People who do not have enough iodine in their diet are at risk of developing goitre. Goitre can be treated with iodine supplements or surgery.
Calcium is a mineral that is important for bone health. Sodium is a mineral that is important for fluid
balance. Iron is a mineral that is important for red blood cell production.Calcium, sodium, and iron deficiency can cause a number of health problems, but they do not cause goitre.