Final answer:
Paulo's therapist is most likely a psychiatrist, as they are medical doctors who can prescribe medication for mental health conditions, unlike psychologists, psychiatric social workers, or licensed counselors.
Step-by-step explanation:
If Paulo's therapist gave him a prescription for an antidepressant, the type of mental health professional he sees is most likely a psychiatrist. Psychiatrists are medical doctors with a degree in medicine (MD) and have the authority to prescribe medication. While other mental health professionals such as psychologists, psychiatric social workers, and licensed counselors can provide therapy and counseling services, they typically do not have the legal authority to prescribe medications. Psychologists may have a PhD or PsyD and can administer and interpret psychological tests but cannot prescribe medication unless they are in certain states that have granted prescribing powers to psychologists, which is rare and requires additional training.
In contrast, psychiatrists can prescribe medication and also provide therapy. A psychiatric social worker provides support and services to individuals with mental health concerns in a community or hospital setting, and a licensed counselor can provide counseling but cannot prescribe medication. Therefore, with Paulo being prescribed medication, the indication is that his therapist is a psychiatrist as they have the unique combination of training in mental health counseling and the ability to prescribe medication for mental health-related conditions.