The correct answer is C. Iodine.
Goitre is a condition in which the thyroid gland becomes enlarged. It is caused by a lack of iodine in the diet. Iodine is a mineral that is essential for the production of thyroid hormones. These hormones are responsible for regulating metabolism, growth, and development.
When there is not enough iodine in the diet, the thyroid gland enlarges in an attempt to produce more thyroid hormones. This can lead to a number of symptoms, including a swelling in the neck, difficulty swallowing, and hoarseness.
Goitre can be prevented by eating a diet that is rich in iodine. This includes foods such as seafood, dairy products, and iodized salt. If you are at risk for goitre, you should talk to your doctor about whether you need to take an iodine supplement.
A. Zinc is a mineral that is essential for many bodily functions, including immune function, wound healing, and protein synthesis. It is not known to cause goitre.
B. Calcium is a mineral that is essential for bone health. It is not known to cause goitre.
D. Chlorine is a mineral that is essential for fluid balance and nerve function. It is not known to cause goitre.