The Hormone Melatonin Helps Synchronize the Sleep-Wake Cycle by Means

Multiple Choice

The hormone melatonin helps synchronize the sleep-wake cycle by means of

A) stimulating the hypothalamus to activate the sleep cycle.
B) triggering the SCN when the amount of light striking the retina declines.
C) traveling to the amygdala to activate the sleep cycle.
D) inducing feelings of drowsiness.
E) inducing alertness just preceding awakening.