Problem: A nurse working at a rehabilitation center observes that a coworker has been giving in to a client's demand for controlled substances. The client has been going through detoxication for drug dependence for the past three weeks. When questioned, the coworker states that it was better to provide the drug to the client in small quantities than to watch the client experience withdrawal symptoms. a. what should the nurse do regarding the coworker's behavior? b. what measures should the nurse take to ensure that the coworker maintains ethical health care practices?