Final answer:
Disorders can be classified in several ways based on how they occurred. Developmental disorders occur when the normal development of the nervous system is disrupted due to defects that existed in the past.
Step-by-step explanation:
The classification of HOW a disorder occurred is multi-faceted. It can be classified as developmental and acquired, congenital and genetic, neurological and psychiatric, or expressive and receptive
. Developmental disorders occur when the normal development of the nervous system is disrupted due to defects that existed in the past.
These defects can be caused by a combination of genetic and environmental factors.
correct option A. Developmental and acquired