【单选题】All the human beings speak a certain kind of language and more. But have you ever ob serve the process of an infant's beginning of learning a language from its parents? What is the importance of a lan...
A.
he wanted to prove that children are born with the ability to speak.
B.
he ignored the importance of mothering to the infant.
C.
he was unkind to the nurses.
D.
he wanted to see if the children could die before they reached the age of one.