The correct answer is: A. Chewang Norphel
Chewang Norphel is an Indian civil engineer who is known for his work on artificial glaciers in Ladakh. He was awarded the Padma Bhushan, India’s third-highest civilian award, in 2020 for his contributions to the field of engineering.
Chewang Norphel was born in 1931 in the village of Khaltse in Ladakh. He studied civil engineering at the Indian Institute of Technology Roorkee and graduated in 1954. After graduating, he worked as a civil engineer in the Indian Army for several years. In 1962, he joined the Ladakh Autonomous Hill Development Council (LAHDC) as a senior engineer.
In the 1970s, Chewang Norphel began working on artificial glaciers in Ladakh. Artificial glaciers are man-made structures that are designed to store snow and ice during the winter months and release it during the summer months. This helps to provide water for irrigation and drinking water in Ladakh, which is a region that is arid for much of the year.
Chewang Norphel has been credited with developing over 100 artificial glaciers in Ladakh. His work has helped to improve the lives of millions of people in the region. He has also been recognized for his work internationally, and he has received several awards, including the Stockholm Water Prize in 2015.
The other options are incorrect because they are not people who have received the Padma Bhushan Award for Medicine in 2020 from Ladakh.