What is the primary use of the element iodine in the human body?
A
Blood clotting
B
Muscle contraction
C
Bone formation
D
Thyroid hormone production
Correct Answer: Option D — Thyroid hormone production
Explanation:
Iodine is essential for the production of thyroid hormones, which regulate metabolism, growth, and development in the human body. Iodine deficiency can lead to goiter and other thyroid-related health complications.