Which of the following trace elements is involved in the structure of a hormone?

The mineral element whose deficiency causes goiter in humans is ...... .

Which of the following diseases is known as autoimmune thyroiditis or thyroid's suicide?

According to pathology,goiter is associated with which of the following?

$A$ pregnant female delivers a baby who suffers from stunted growth,mental retardation,low intelligence quotient,and abnormal skin. This is the result of:

Cretinism can be prevented or cured by the administration of