Drugs of abuse activate the reward pathway in the brain.This pathway consists of multiple brain structures,many neurotransmitters,and millions of interconnected neurons.Determining the brain changes that underlie the transition from casual drug use to addiction is a difficult process due to the _____ of the system.
A)reliability
B)parsimony
C)complexity
D)reactivity

Question

Quizplus · Accepted Answer

The sentence directly states that the difficulty in determining the brain changes that underlie the transition from casual drug use to addiction is due to the complexity of the reward pathway in the brain.

Drugs of Abuse Activate the Reward Pathway in the Brain