An example of a Developmental Disorder is

Autistic spectrum disorders (ASD) are classified as Developmental Disorders in DSM-5, characterized by persistent deficits in social communication and interaction, along with restricted, repetitive patterns of behavior. ADHD (A) is a Neurodevelopmental Disorder but not specifically classified as a Developmental Disorder in the same category. Dyslexia (B) is a Specific Learning Disorder, not a Developmental Disorder. Mental Retardation (C), now called Intellectual Disability, is a Neurodevelopmental Disorder but is distinct from Developmental Disorders classification.