A nurse is caring for a client who has an opioid use disorder. The nurse should anticipate that the provider will prescribe which of the following medications for treatment?

A. Phenobarbital: Phenobarbital is a barbiturate primarily used for seizure control or sedation. It is not indicated for treating opioid use disorder and does not address opioid withdrawal symptoms or cravings. B. Buprenorphine: Buprenorphine is a partial opioid agonist used in medication-assisted treatment for opioid use disorder. It reduces cravings and withdrawal symptoms while lowering the risk of misuse, making it a first-line pharmacologic intervention. C. Chlordiazepoxide: Chlordiazepoxide is a benzodiazepine commonly used to manage alcohol withdrawal. It does not target opioid withdrawal symptoms or aid in long-term opioid use disorder management. D. Diazepam: Diazepam, another benzodiazepine, is used for anxiety, muscle spasms, or alcohol withdrawal but is not appropriate for treating opioid use disorder. It does not address opioid cravings or withdrawal management.