A branch of medicine that deals with etiologies, mechanisms and medicine and manifestation of diseases is called:

Explanation: Correct Answer: Pathology is the branch of medicine that studies the causes, mechanisms, and effects of diseases. It involves examining tissues, organs, bodily fluids, and autopsies to diagnose disease. Other Options: (A) Physiology - Focuses on the normal functions of living organisms and their parts, not disease processes. (B) Pharmacology - The study of drugs and their effects on the body. (D) Oncology - A branch of medicine that focuses specifically on the treatment of cancer, not all diseases.