Answer :
IQ below 70, indicating that Dan has significant cognitive delays and major deficits in adaptive functioning, which is consistent with an intellectual disability. The correct option is a) Has an IQ below 70,
Based on the provided reference information, an IQ score below 70 indicates significant cognitive delays and major deficits in adaptive functioning. An individual with such a score would be considered to have an intellectual disability and would exhibit deficits in intellectual functioning and adaptive behavior.
This is consistent with the description of Dan, who has the academic skills of a fourth-grader and is unable to live independently. The references indicate that this level of functioning is typical in those who fall in the range characterized by an IQ below 70, which aligns with the criteria listed in the Diagnostic and Statistical Manual of Psychological Disorders for identifying different subtypes of intellectual disability.
The references make clear that having an IQ below 70 drastically differs from the threshold for giftedness, which is an IQ above 130, making options b) and c) incorrect. And, since the average IQ score ranges between 85 and 115, option d) is also incorrect for Dan. Therefore The correct option is a) Has an IQ below 70, Therefore The correct option is a) Has an IQ below 70.
