The correct answer is: Dr. C. Barnard.
Dr. Christiaan Barnard was a South African cardiac surgeon who performed the world’s first human heart transplant on December 3, 1967. The patient, Louis Washkansky, survived for 18 days after the surgery.
Dr. W. Harbe was a German surgeon who performed the first animal heart transplant in 1905. However, his work was not widely known or accepted at the time.
Sir F.G. Hafkin was a British surgeon who performed the first human kidney transplant in 1954.
Dr. Louis Pasteur was a French chemist and microbiologist who is considered the father of modern microbiology. He is best known for his work on pasteurization and vaccines.
Dr. Barnard’s groundbreaking surgery was a major medical breakthrough and helped to pave the way for future heart transplants.