Concept:M.S. Swaminathan is known as the father of the Green Revolution in India for his work in agriculture and crop science.
Explanation:M.S. Swaminathan was a leading agricultural scientist.
He played a key role in India's Green Revolution by introducing high-yield varieties of wheat and rice.
He helped bring Mexican semidwarf wheat to Indian farms and promoted modern farming methods.
He served as director-general of the Indian Council of Agricultural Research (1972–79) and as principal secretary of the Ministry of Agriculture (1979–80).
He also headed the International Rice Research Institute (1982–88) and was president of the International Union for Conservation of Nature (1984–90).
The other options—journalist, ecologist, ornithologist—do not match his profile.
Answer:B. An agricultural scientist
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