Answer: C. Melatonin.
Explanation: Melatonin is the hormone responsible for sleep and wake cycles. :)
Inprove your diet i hope this kinda helpss
People were not careful and wanted to take the selfie to show people that they did something cool. Mainly just to brag on the internet or feel righteous about themselves. Also by not taking the correct precautions
Answer:
a safety is worth 2 points