ACCORDING TO THE AUTHOR, WHICH OF THE FOLLOWING REASONS DISRUPT TRAVELERS’ SLEEP
48. According to the author, which of the following reasons disrupt travelers’ sleep?A. Travelers try to sleep between 3-5 p.m.B. Travelers’ attention is reduced by 75 percent.C. Travelers fly in the natural direction of their internal clock.D. The traveler’s internal circadian clock has to adjust to patterns of light and activity.