Question

1. identify the thyroid disorder that develops in infants.

myxedema
cretinism
thyromegaly
goiter

Explanation:

Cretinism is a thyroid disorder that occurs in infants. It is caused by severe hypothyroidism (under - active thyroid) during fetal development or in the early postnatal period. The thyroid hormones are crucial for normal growth and development, especially of the brain. In infants with cretinism, there are significant growth retardation (both physical and mental) due to the lack of adequate thyroid hormone levels.
Goiter is an enlargement of the thyroid gland, which can occur due to various reasons like iodine deficiency (common in endemic goiter) or thyroid disorders like Graves' disease (in some cases of toxic goiter). It is not specific to infants.
Thyromegaly is just another term for an enlarged thyroid (goiter).
Myxedema is severe hypothyroidism in adults, characterized by swelling (myxedema), lethargy, and other metabolic slow - down symptoms.

Answer:

Cretinism