Dr. Dwarka Nath Kotnis was a renowned figure in the field of medicine, known for his selfless service and dedication. Option 1, "He provided succor to the poor," is a possible claim to fame for him, as he was known for providing medical assistance to those in need, especially the impoverished. Option 2, "He set up hospitals in the difficult to reach regions of India," is another potential claim to fame for Dr. Kotnis. He may have worked tirelessly to establish medical facilities in remote and underserved areas, ensuring that healthcare was accessible to all. However, these options do not encompass the most significant achievement of Dr. Kotnis.

The correct claim to fame for Dr. Dwarka Nath Kotnis is outlined in option 4: "He laid down his life providing medical help to the Eighth Route Army." While serving as a medical doctor in the Indian Medical Mission to China during World War II, Dr. Kotnis dedicated himself to treating wounded soldiers of the Eighth Route Army, who were fighting against the invading Japanese forces. Unfortunately, Dr. Kotnis lost his life while fulfilling this noble mission. His sacrifice and commitment to saving lives make him a true hero and a symbol of selflessness.

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