Research indicates that using electronic devices before bed may make it difficult for people to fall asleep. The light appears to interfere with the body's ability to create this hormone , which is responsible for sleep and wake cycles.
The correct answer is A, melatonin. Melatonin is the hormone that regulates the circadian cycle. Having your eyes stimulated by light, the blue spectrum, more precisely, will prevent serotonin from transforming in melatonin.
