TOEFL Listening: TPO-TOEFL阅读TPO - RO84S5OSHU4WZ2P7N$

According to paragraph 1, what is the evidence that a child has developed autobiographical memory? A. The child is able to remember past events from before the age of three years. B. The child is able to describe past events in a sufficiently lengthy and cohesive manner. C. The child is aware that he or she does not remember experiences from before the age of three years. D. The child is able to give a basic description of the nature of autobiographical memory.