that young babies learn to do things because certain acts lead to awards.A. It is widely

问题补充：

that young babies learn to do things because certain acts lead to awards.

A. It is widely accepted

B. What is widely accepted

C. Which is widely accepted

D. That is widely accepted

答案：

(答案→)A. It is widely accepted

B. What is widely accepted

C. Which is widely accepted

D. That is widely accepted

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