The question below comprises four scattered segments of a paragraph. Identify…

The question below comprises four scattered segments of a paragraph. Identify from among the four choices the sequences that correctly assemble the segments and complete the paragraph.

A. Nobody knows why we sleep, but we all need to.

B. Babies need fourteen to eighteen hours sleep whereas the elderly need less than they did when young but often take a nap during the day.

C. About 8% of adults are happy with five hours or less and 4 % want ten hours or more.

D. There are no rules about how much sleep is necessary but the average adult sleeps for 7 hours 20 minutes.