Chandi Prasad Bhatt is a well known :

The correct answer is: A. Environmentalist and Social Activist.

Chandi Prasad Bhatt is a well-known Indian environmentalist and social

activist. He is the founder of the Chipko Movement, a non-violent protest against deforestation in the Himalayas. He is also the founder of the Dasholi Gram Swaraj Mandal, a non-profit organization that works to promote sustainable development in the Himalayas.

B. Economist and Writer is incorrect because Chandi Prasad Bhatt is not an economist or a writer.

C. Painter is incorrect because Chandi Prasad Bhatt is not a painter.

D. Classical Hindustani Vocalist is incorrect because Chandi Prasad Bhatt is not a classical Hindustani vocalist.