People who consume caffeine within six hours of going to sleep are shown to have less restful sleep than those who abstain from caffeine. Short daytime naps usually improve performance and alertness in adults. However, study subjects who consume caffeine immediately before a short afternoon nap performed better on tests and felt more alert after the nap than others who simply took naps.
Which of the following, if true, best reconciles the apparent discrepancy described above?
We need to find a reason that resolves the discrepancy
A. I
ncreased caffeine intake leads to more feelings of tiredness, even though it also prevents people from actually sleeping. - wrongthis statement doesn't resolve discrepancy. It actually states the effects of caffeine.
B.
Increased caffeine intake leads to more rapid neural functioning, and more rapid neural functioning prevents restful sleep. - wrongthis statement explains how caffeine prevents restful sleep. it doesn't explain how even after taking caffeine subjects can have an effective short daytime naps.
C.
Caffeine takes about twenty minutes to take effect after consumption, so the pre-nap caffeine intake lessened the groggy effects of napping while retaining the benefits. - correctCorrectly reconciles the apparent discrepancy. It explains correctly why the caffeine intake doesn't disturb the nap. Since the effect of caffeine takes twenty minutes, the caffeine doesn't affect the nap and provides benefits that helps in improved performance in the tests
D.
The naps were not long enough to have beneficial effects for either group. - wrongDoesn't help in reconciling the discrepancy.
E.
People who regularly consume caffeine require slightly more sleep to function optimally than those who do not regularly consume caffeine. - wrongDoesn't help in reconciling the discrepancy. We don't have the details of the subjects.