Step 1: Analyze Anna Hazare (A)
While famous for his anti-corruption activism, Anna Hazare's foundational work was in transforming his drought-prone village, Ralegan Siddhi, through community-based watershed development.
Thus, A matches with (IV).
Step 2: Analyze Rajender Singh (B)
Rajender Singh, known as the "waterman of India," is renowned for his water conservation efforts in Rajasthan, primarily through the NGO Tarun Bharat Sangh.
Thus, B matches with (II).
Step 3: Analyze Chandi Prasad Bhatt (C)
Chandi Prasad Bhatt is an Indian environmentalist and social activist, who was one of the pioneers of the Chipko movement in the 1970s.
Thus, C matches with (III).
Step 4: Analyze Medha Patkar (D)
Medha Patkar is a social activist best known as a founding member of the large-scale social movement, Narmada Bachao Andolan (Save the Narmada Movement).
Thus, D matches with (I).
Conclusion: The correct matching is A-IV, B-II, C-III, D-I.
List-I and List-II
| List-I | List-II |
|---|---|
| (A) Brundtland Report | (I) 1992 |
| (B) Antarctic Treaty | (II) 1991 |
| (C) Antarctic Environmental Protocol | (III) 1959 |
| (D) Earth Summit in Rio de Janeiro | (IV) 1987 |