Sally and her granddaughter play peekaboo regularly. At first, Sally starts the game and her granddaughter is an amused observer. By 12 months, the granddaughter actively participates, trading roles with Sally. Sally is helping her granddaughter
A) learn how to overextend and underextend.
B) understand the turn-taking pattern of human conversation.
C) develop a referential style of communication.
D) understand telegraphic speech.
Answer: B
Psychology
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