Cretinism, mental retardation, low intelligence quotient, abnormal skin, deaf-mutism, etc., are the results of

The correct option is C Hypothyroidism
Hypothyroidism also called underactive thyroid or low thyroid, is a disorder of the endocrine system in which the thyroid gland does not produce enough thyroid hormone. It can cause a number of symptoms, such as poor ability to tolerate cold, a feeling of tiredness, constipation, depression, and weight gain. Hyperthyroidism is a condition of the thyroid. The thyroid is a small, butterfly-shaped gland located at the front of your neck. It produces tetraiodothyronine (T4) and triiodothyronine (T3), which are two primary hormones that control how your cells use energy. So, the correct option is "Hypothyroidism".