The correct answer is: A. C.V. Raman.
C.V. Raman was an Indian physicist who won the Nobel Prize in Physics in 1930 for his discovery of the Raman effect, a phenomenon in which light is scattered by a substance and its wavelength is changed. He was the first Indian and Asian to win the Nobel Prize in Physics.
Mother Teresa was an Albanian-Indian Roman Catholic nun and missionary who founded the Missionaries of Charity in Kolkata, India in 1950. She was awarded the Nobel Peace Prize in 1979 for her humanitarian work.
Rabindranath Tagore was a Bengali polymath who reshaped Bengali literature and music, as well as Indian art with Contextual Modernism in the late 19th and early 20th centuries. Author of “Gitanjali”, he became the first non-European to win the Nobel Prize in Literature in 1913.
S. Chandrasekhar was an Indian astrophysicist who made fundamental contributions to the theory of stellar structure and evolution. He was awarded the Nobel Prize in Physics in 1983 for his work on the stability of white dwarf stars.