D) neurotrasmitters; nerve cells
Sam works as a bicycle messenger in lower Manhattan. As he moves between a car and a bus, he relies on his nervous system's production of ______, which carry information between ______, to enable him to swerve out of danger.
A) hormones; nerve cells
B) neurotransmitters; glands
C) neurons; axons
D) neurotransmitters; nerve cells
E) hormones; glands