IQ = 20-34 -: (A) Severe MR, (B) Profound MR, (C) Moderate MR, (D) Mild MR
Answer is A. WHO classification of mental retardation (MR) mild MR ...IQ 50-70 moderate MR....IQ 35-49 severe MR....IQ 20-34 profound MR... IQ undere 20 ref; (page no;582) 23rd edition of PARK&;s textbook of Preventive and Social medicine