300
13. Scientists conduct tests on a new pain medication. They give 10 people 5 mg of the drug. Then each person reports on the effects of the drug after 30 minutes, 1 hour, and 2 hours. Nine of the test subjects report that the drug relieved their pain. The tenth subject reports that the drug did not relieve pain and the subject is now having blurred vision. Which factor best explains why the tenth person reacted differently to the pain medication?
a. individual susceptibility
b. high potency
c. dose
d. individual exposure
What is A