29Which of the following statements is correct?
(A) According to Piaget, one stage of cognitive development is independent of the other stages.
(B) Chomsky argues that language is something that humans do, not something that they have.
(C) Vygotsky argues that language first emerges as a means by which the child engages others socially.
(D) Dave’s research shows the largest grammatical category into which a child’s first 50 words can be placed is nominal.