All are symptoms of autism spectrum disorder except.

A. Stereotypic movements. Repetitive motor behaviors, such as hand-flapping, rocking, and spinning, are characteristic of autism spectrum disorder (ASD). These stereotypic movements serve as self-stimulatory behaviors and may help regulate sensory input. B. Restricted interest. Individuals with ASD often display intense, fixated interests in specific topics or objects (e.g., an obsession with maps, numbers, or train schedules). These restricted interests are highly focused and often interfere with daily functioning. C. Social communication deficit. Impaired social interaction and communication are core features of ASD. Affected individuals struggle with understanding social cues, making eye contact, interpreting facial expressions, and engaging in reciprocal conversations. D. Receptive language dysfunction. While language delays can be present in ASD, receptive language dysfunction (difficulty understanding spoken language) is more characteristic of specific language impairment (SLI) or aphasia rather than ASD. In ASD, deficits in pragmatic (social) communication are more pronounced than in purely receptive language processing.