问题详情

Whatistheauthorspurposeinwritingthepassage？
A.Togiveaprescriptionforinsomnia.
B.Tourgepeopletosleepless.
C.Toanalyzethesleeppatternofmodernpeople.
D.Tothrownewlightonhumansleep.
请帮忙给出正确答案和分析，谢谢！