Mental retardation is defined if IQ is below -
Ans. is 'c' i.e., 70 * A child with IQ < 70 is called mentally retarded.* The WHO classification of mental retardation is based on the concept of IQ and includes the following categories:CategoryIQMild50-70Moderate35-49Severe20-34Profound<20* A child with IQ < 70 is called mentally retarded.
90
80
70
60
Social Science, Mental Health & Genetics