Your Book Describes the Speaking Style of "Motherese", Which Is

Your book describes the speaking style of "motherese", which is characterized by exaggerated intonation, a slow rate of speech, and high pitch. Motherese is important to help infants

A) learn the rules of intonation in spoken language
B) recognize where phrases and sentences begin and end
C) hear the relevant phonemes of the native language
D) all of the above