The correct answer is C. Sundarlal Bahuguna.
Sundarlal Bahuguna was an Indian environmentalist and social activist who was known for his role in the Chipko movement. The Chipko movement was a nonviolent resistance movement that was started in the 1970s to protect trees from being cut down. Bahuguna was one of the leaders of the movement, and he is credited with coining the term “Chipko”.
Bahuguna was born in 1927 in the village of Silyara in the Garhwal region of Uttarakhand, India. He was educated at the University of Allahabad, where he studied physics. After graduating, he worked as a teacher for a few years before becoming involved in social activism.
In the 1970s, Bahuguna became involved in the Chipko movement. The movement was started by women in the Garhwal region who were concerned about the deforestation that was taking place in their area. The women would hug the trees to prevent them from being cut down, and they would also sing songs and chant slogans to raise awareness about the issue.
Bahuguna was one of the leaders of the Chipko movement, and he is credited with coining the term “Chipko”. The term “Chipko” means “to hug” in the Garhwali language. Bahuguna and the other Chipko activists used nonviolent resistance to stop the deforestation that was taking place in the Garhwal region. They would hug the trees to prevent them from being cut down, and they would also sing songs and chant slogans to raise awareness about the issue.
The Chipko movement was successful in stopping the deforestation that was taking place in the Garhwal region. The movement also inspired other environmental movements around the world. Bahuguna was awarded the Ramon Magsaysay Award in 1982 for his work in the Chipko movement. He died in 2011 at the age of 84.
The other options are incorrect because they are not social activists or environmentalists who were known for the Chipko movement. Medha Patkar is a social activist who is known for her work on the Narmada Bachao Andolan. Vandana Shiva is an environmentalist who is known for her work on sustainable agriculture. Saalumarada Thimmakka is a social activist who is known for her work on planting trees.