How does the author make a connection between dopamine levels in the brain and a lack of sleep?
by comparing the sleep patterns of well-rested individuals
with those of sleep-deprived people
B)
by listing the negative effects for people who do not get
enough sleep on a consistent basis
©
by showing that sleep-deprived people require higher
dopamine levels to stay awake
D
by defining dopamine as an intricate chemical that controls
how people can function with more sleep