Answer:
eating too little of foods high in iodine
Explanation:
Iodine deficiency lead to goiter that is why it is necessary to consume food rich in iodine like taking iodized salt or sea foods which prevent this. This lead to goiter because, your thyroid gland need iodine to repair tissues, produce thyroid hormones, aid metabolism and for proper growth,therefore deficiency of it will result in non of the following functions.