9. The author mentions that published music is not considered to be folk music because (A) the original composer can be easily identified (B) the songs attract only the young people in a community (C) the songs are generally performed by professional singers (D) the composers write the music in rural communities

12. Why does the author mention syllables pronounced with rising and falling inflections in lines 7-8 ? (A) To demonstrate how difficult it is for babies to interpret emotions (B) To illustrate that a six-week-old baby can already distinguish some language differences (C) To provide an example of ways adults speak to babies (D) To give a reason for babies' difficulty in distinguishing one adult from another

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