Goiter is a disease caused by the insufficient amount of _____?

گوئٹر کیا ایک بیماری ہے جس کی وجہ _____ کی ناکافی مقدار ہے؟

Iodine

Mercury

Iron

None of these

Goiter is the abnormal enlargement of the thyroid gland due to iodine deficiency.

Iodine is essential for thyroid hormone production, which regulates metabolism.