Which of the following is a preventable cause of mental retardation -: (A) Hypothyroidism, (B) Down syndrome, (C) Cerebral palsy, (D) All of the above
Answer is A. Ans. is 'a' i.e., Hypothyroidism Adequate care for prevention of hypothyoid state can prevent mental retardation in hypothyroidism. Down's syndrome and cerebral palsy are congenital causes of mental retardation and prevention of mental retardation would be possible only by prvention of the syndrome itself.