Early research suggests that some children who go to day care instead of staying at home with a caregiver are more likely to be

A. Repetitive behaviors: restricted, repetitive behaviors and interests are diagnostic features of autism spectrum disorder (ASD) but are absent in social (pragmatic) communication disorder (SCD).
B. Difficulty communicating appropriately in a social context: This describes both ASD and SCD (social/pragmatic communication deficits), so it does not distinguish them.
C. Difficulty with turn taking during conversations: Also a social-communication deficit present in both ASD and SCD.
D. Difficulty understanding figurative language: Pragmatic/figurative-language difficulties appear in both disorders and are not unique to ASD.
E. Delayed language acquisition: Language delay can occur in ASD and sometimes in SCD, so it is not uniquely distinguishing.

A. A maternal age greater than 35:Advanced maternal age is a risk factor for chromosomal abnormalities (e.g., nondisjunction) but is not itself an external teratogenic agent.
B. A genetic mutation during meiosis:A meiotic error is a genetic cause of birth defects (endogenous), not a teratogen (which is an external environmental agent).
C. Neonatal exposure to the flu:Exposure after birth (neonatal) is not a prenatal teratogen affecting embryonic/fetal development.
D. The mother having chicken pox during pregnancy:maternal infection with varicella during pregnancy can act as a teratogen (congenital varicella syndrome) and cause fetal anomalies - infections are classic teratogens.
E. The mother having an amniocentesis:Amniocentesis is an invasive diagnostic procedure that carries some risk (e.g., miscarriage) but is not classified as a teratogenic agent in the same sense as drugs/infections/radiation.