Which of the following is a reason that infant-directed speech supports language acquisition?
A. Infant-directed speech is considered to be an innate facilitator of language that permits infants to quickly and efficiently analyze everyday speech.
B. When parents speak in infant-directed speech they exaggerate the sounds they make, which helps infants hear and distinguish the different sounds and map sounds to meanings.
C. When parents speak in infant-directed speech they keep their lip movements normal, which helps infants to distinguish lip movements relevant to speech.
D. Infant-directed speech is preferred by adults because it teaches babies how to take turns talking.
Answer: B
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