Answer:
they all relate to a person's behavior when he or she is abusing substances therefore the answer is C.
Explanation:
Abusing Substances: Substance abuse can simply be defined as a pattern of harmful use of any substance for mood-altering purposes.
Person's Behavior: Human behavior is the response of individuals or groups of humans to internal and external stimuli.
External Stimuli: External Stimuli are reactions to the world around you, for instance someone throws something at you, you flinch. If someone shines a bright light in your eye you close your eyes.
Stimuli are generally easy to understand if you keep in mind that Internal means Feelings,
External means Reaction.