Final answer:
b. out of control. Addiction is characterized by compulsive behavior that feels out of control and leads to drug dependence and tolerance, where cessation of the drug can cause withdrawal symptoms.
Step-by-step explanation:
An addiction is defined as a persistent, chronic, and intense focus on a single behavior pattern that feels out of control. Addiction refers to the compulsive use of a substance such as a psychoactive drug despite the negative consequences that such use may entail. For instance, drug addiction can lead to a condition known as drug dependence, where stopping the use of the substance produces physical and/or psychological symptoms. Additionally, the development of tolerance occurs when a drug user requires more and more of a given drug to experience the same effects, escalating the addiction.
An addiction is defined as a persistent, chronic, and intense focus on a single behavior pattern that feels: a. internally controlled. An addiction is characterized by a compulsive and out-of-control behavior, where the individual feels a pleasurable sensation while engaging in the addictive behavior. This could refer to drug addiction, where the individual experiences cravings and continues to use the substance despite negative consequences.