Final answer:
A therapist prescribing Prozac, a medication for mental health conditions, is likely a psychiatrist since they can prescribe medication, unlike psychologists.
Step-by-step explanation:
If Clyde's therapist prescribed Prozac for Clyde's disorder, then the therapist is most likely a psychiatrist. Prozac, known generically as fluoxetine, is a selective serotonin reuptake inhibitor (SSRI) commonly prescribed to treat a variety of mental health conditions, including depression, anxiety disorders, obsessive-compulsive disorder, and certain eating disorders. Psychiatrists are medical doctors with the authority to prescribe medication, which distinguishes them from psychologists who primarily provide therapy and cannot prescribe medication in most jurisdictions.