A young child is alone in a room, trying to put together a difficult puzzle. The child says out loud, "Maybe if you look for the pieces with the flat side first, it will be easier to finish the outside part." This pattern of private speech is most consistent with ________ view of the function of this kind of speech.
A. Binet's
B. Piaget's
C. Vygotsky's
D. Kohlberg's
Answer: C
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