The correct answer is B. Medha Patkar.
Medha Patkar is an Indian environmentalist and social activist who is best known for her work with the Narmada Bachao Andolan (NBA), a movement that opposed the construction of the Sardar Sarovar Dam on the Narmada River. The NBA was successful in delaying the construction of the dam, and Patkar has been recognized for her work with the movement with numerous awards, including the Right Livelihood Award and the Goldman Environmental Prize.
Vandana Shiva is an Indian environmental activist and physicist who is known for her work on issues related to biodiversity, biotechnology, and intellectual property rights. She is the founder of the Research Foundation for Science, Technology and Ecology, and has written extensively on environmental issues.
Menaka Gandhi is an Indian politician and social activist who is the daughter of Indira Gandhi and Feroze Gandhi. She has served as a member of the Indian Parliament and as the Minister of State for Environment and Forests.
Mayilamma is an Indian social activist who is known for her work with the Dalit community. She is the founder of the Mayilamma Mahila Mandali, an organization that works to empower Dalit women.
In conclusion, the correct answer to the question “Leader of “Narmada Bachao Andolan” is B. Medha Patkar.”