Which of the following is a factor THAT determines a drug’s effects and its abuse potential? ?

Question by Nurse Gray: Which of the following is a factor THAT determines a drug’s effects and its abuse potential? ?
A. route of administration
B. speed of transit to the brain
C. affinity for nerve cell and neurotransmitters
D. all of the above

Best answer:

Answer by S N
I’m not sure,but my guess is B.

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