In the US, Evidence That Daylight Affects Human Circadian Rhythms Is Supported

Multiple Choice

In the U.S., evidence that daylight affects human circadian rhythms is supported by the observation that even though everyone's time keepers (clocks, phone) report the same time, people in the western part of the time zone go to bed _______ people in the in eastern part of the time zone.

A) much earlier than
B) slightly earlier than
C) a bit later than
D) at the time as