This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Social science, Mental health & Genetics, Subject name: Social & Preventive Medicine
IQ of Idiots - 
Select and explain. 
A. 50-70, B. 25-50, C. 70-80, D. <25
D: <25
Answer: D: <25 
Explanation: level of intelligence IQ range idiot 0-24 imbecile 25-49 moron 50-69 borderline 70-79 low normal 80-89 normal 90-109 superior 110-119 very superior 120-139 near genius 140 and above ref ;(page no;679)23rd edition of PARK&;s textbook of Preventive and Social medicine