Which of the following professionals is a medical doctor

A)  a physiological psychologist
B)  a clinical psychologist 
C)  a psychiatrist
D)  a counselling psychologist

Medical Doctor

A trained professional who practices medicine, which involves promoting, maintaining, or restoring health through the study, diagnosis, prognosis, and treatment of disease, injury, and other physical and mental impairments.

Clinical Psychologist

A professional specializing in diagnosing, treating, and preventing mental, emotional, and behavioral disorders through various forms of therapy.

Psychiatrist

A medical doctor specializing in the diagnosis, treatment, and prevention of mental health and emotional disorders, capable of prescribing medication.