This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Abnormalities of Development, Subject name: Pediatrics
What should be used for the treatment of this child with intellectual disability? 
Select and explain. 
A. Biotin, B. Hydroxocobalamin, C. Pyridoxine, D. Thyroxine
D: Thyroxine
Answer: D: Thyroxine 
Explanation: The given picture of the child with puffy (myxedematous) facies, protruding tongue, abdominal distension, umbilical hernia and intellectual disability suggest - 'congenital hypothyroidism'. C/F of congenital hypothyroidism: Bih weight & length- usually normal Wide open anterior & posterior fontanelle Prolonged physiological jaundice Myxedematous facies Large, protruded tongue Skin- dry & scaly Hypotonia, hypothermia, hoarse cry Abdominal distension, umbilical hernia Constipation Thyroxine is used in the treatment of this disorder.