A 19-month-old boy has a positive result on the Modified Checklist for Autism in Toddlers (M-CHAT-R/F) screen. What does this indicate?

Choice A reason: A positive M-CHAT-R/F screen does not confirm a diagnosis of autism; it is a screening tool indicating the need for further evaluation. Choice B reason: While developmental delay may exist, the screening result is not diagnostic for any condition. Choice C reason: This is correct. A positive result indicates that the child should undergo a comprehensive developmental and behavioral evaluation to determine if ASD or other delays are present. Choice D reason: ABA therapy is a treatment for confirmed autism but is premature without a definitive diagnosis following comprehensive assessment.