<prompt> Clinical features of hypothyroidism in a newborn are all except:SluggishnessLarge tongueLarge posterior fontanelMental retardation  <response>: d. Mental retardationRef: Nelsons 20e p 2669-2773, Ghai 8e p 516-521Mental retardation Intellectual disability develops by 3-6 months of age not in neonatal period. 