The correct option is A True
A simple goitre is caused by iodine deficiency. The body needs iodine to produce thyroid hormone. If there is not enough iodine in the diet, the thyroid gets larger to try and capture all the iodine it can, so it can make the right amount of thyroid hormone. So, a goitre can be a sign the thyroid is not able to make enough thyroid hormone. That is why the use of iodine into table salt may reduce incidents of simple goitre.