This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Medicine
[{'content': 'For a definitive diagnosis of mental retardation reduced level of intellectual functioning should be seen along with \nSelect and explain. \nA. Impaired motor skills, B. Impaired speech, C. Academic difficulties, D. Impaired adaptive functioning', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Reduced level of intellectual functioning resulting in diminished ability to adapt to the daily demands of the normal social environment as a diagnostic criteria in ICD, asks for IQ tests to be done with adaptive function assessment .', 'role': 'assistant'}]