Question

because the thyroid gland requires iodine, a persons thyroid gland will shrink if they become iodine deficient.
a true
b false

Explanation:

Iodine - deficiency causes the thyroid gland to enlarge (goiter) as it tries to produce more thyroid - stimulating hormone to compensate for the lack of iodine for thyroid hormone synthesis, not shrink.

Answer:

B. False