The presentation cites studies done by highly reliable sources. For example, Charles Czeisler from Harvard Medical School and the National Sleep Foundation are both cited. What is the purpose of including these sources? Be sure to use information from the presentation to support your answer.

Select the correct answer from each drop-down menu of his quick wit. 1. the news anchor of the moming show is famous for his facial expressions and the 2 sheena is famous for speaking in a manner when she doesn't get exactly what she wants 3 the new housing complex near the highway has every that a resident could ask for reset next 18 search the web and windows