Correct Answer:
Option D - Cardiologists, Nephrologists and Pulmonologist all three are the persons who treats internal body diseases. Whereas, Psychiatrists is different from other. Hence, option (d) is different.
D. Cardiologists, Nephrologists and Pulmonologist all three are the persons who treats internal body diseases. Whereas, Psychiatrists is different from other. Hence, option (d) is different.