This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Mental Retardation, Subject name: Psychiatry
Nowadays Down syndrome is referred to as: 
Select and explain. 
A. Submental disorder, B. Oligophrenia, C. Madness, D. Mentally unstable
A: Submental disorder
Answer: A: Submental disorder 
Explanation: Ans. a. Submental disorderMajority of children with Down syndrome function in mild to moderate range of mental retardation.Down syndrome/Trisomy 21:Genetic disorder caused by presence of all or part of a third copy of chromosome 21.Typically associated with physical growth delays, characteristic facial features and mild to moderate intellectual disability.