Answer by choosing the correct options
Mary and Manoj were classmates and good friends. On turning 11, Mary developed a little bulge on the front of her neck. She visited the doctor who gave her medication and advised her to take iodine-rich food. Similarly, a bump was developed on the front of Manoj’s neck when he turned 12. However, the doctor told him that it was a normal part of growing up.
i. Why did the doctor advise Mary to take iodine-rich food?
ii. What is the bump on Manoj’s neck called, and why did it appear during adolescence?
iii. What do the conditions of Mary and Manoj together show about the changes that occur during adolescence?