Reba Has Been Accurately Diagnosed as Being Affected by Organic

Multiple Choice

Reba has been accurately diagnosed as being affected by organic retardation. Which statement about Reba would ALWAYS be true?

A) Reba's retardation is due to some identifiable biological cause.
B) Reba's level of retardation would be either severe or profound.
C) Reba was raised in an understimulating environment.
D) Reba has three 21st chromosomes.