7.5 Medium

A. Alex's IQ of 72, being less than two standard deviations below the mean, automatically disqualifies him for an intellectual disability diagnosis, regardless of other factors.

B. For Alex to be diagnosed with an intellectual disability, additional evidence demonstrating major deficits in adaptive functioning and the presence of these cognitive and adaptive deficits before the age of 18 would be required, as an IQ score of 72 by itself is not definitive, especially given the Hall v. Florida ruling.

C. The Supreme Court's ruling in Hall v. Florida means that any IQ score is rendered irrelevant when determining intellectual disability for legal purposes, making Alex's score negligible.

D. Since 68% of the population has an IQ between 85 and 115, an IQ of 72 puts Alex within a broader interpretation of the average range, negating the possibility of an intellectual disability diagnosis.