Which level of IQ is considered as Profound Level of Intellectual Disability?

Choose the correct answer from the options given below:

The correct option is IQ (Below 20-25).

Intellectual disability (formerly referred to as mental retardation) is characterized by significant limitations both in intellectual functioning (reasoning, learning, problem-solving) and in adaptive behavior. The Diagnostic and Statistical Manual of Mental Disorders (DSM) traditionally classifies intellectual disability into four distinct severity levels based on intelligence quotient (IQ) scores. These levels are categorized as follows:

1. Mild Intellectual Disability: IQ score range of approximately 50-55 to 70.
2. Moderate Intellectual Disability: IQ score range of approximately 35-40 to 50-55.
3. Severe Intellectual Disability: IQ score range of approximately 20-25 to 35-40.
4. Profound Intellectual Disability: IQ score below 20 or 25.

As outlined in the classifications above, individuals with an IQ score below 20-25 require 24-hour, constant supervision and support for all basic activities of daily living, which corresponds to the Profound Level of Intellectual Disability. Therefore, the option representing an IQ below 20-25 is correct.