A. oxygen
B. thyroxine
C. insulin
D. progesterone
Correct Answer: Option B
B. thyroxine
Explanation
Iodine is essential for the production of thyroxine in animals. Therefore, choice B is correct.
A. oxygen
B. thyroxine
C. insulin
D. progesterone
Correct Answer: Option B
B. thyroxine
Explanation
Iodine is essential for the production of thyroxine in animals. Therefore, choice B is correct.
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