Which of the following is NOT a symptom of autism in toddlers?

Speaking fluently is considered typical language development and is generally not associated with autism symptoms in toddlers. In fact, many children who are typically developing may show advanced language skills, including the ability to speak fluently at an early age.

On the other hand, the other symptoms mentioned are characteristics commonly recognized in toddlers with autism. Not looking where someone points can indicate difficulties with joint attention, which is critical for social communication. Similarly, not responding to one's name is often noted in children with autism; it reflects challenges in social engagement. Difficulty in social interactions is a core characteristic of autism, as these children may struggle to interpret social cues and connect with peers. Therefore, speaking fluently stands out as an atypical symptom in the context of autism in toddlers.