Every workday Harry has to drive a long way through heavy traffic in order to reach the office by 8:00 AM. By the time he gets there, he feels anxious and stressed. Which of the following statements is FALSE?
a. During his drive there were changes to hormones in his system.
b. The cortisol hormone definitely increased if he was feeling stressed.
c. Hormones are simply chemicals that affect human moods and behavior.
d. Unfortunately, hormones cannot be detected in the human system.