The option that is NOT a classification system for disabilities is the Dewey Decimal Classification (DDC), which is used for organizing library materials. The DSM-5, ICF, and AAIDD classification systems are specifically designed for disabilities. Hence, DDC is the correct answer. ;
The correct answer is C. Dewey Decimal Classification (DDC), as it is a library system and not focused on disabilities. The DSM-5, ICF, and AAIDD are all classification systems specifically related to various disabilities. Therefore, DDC is the option that does not classify disabilities.
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