First biosphere reserve was established in 1986 at
(a) Nilgiri
(b) Nanda Devi
(c) Rann of Kutch
(d) Sunderbans

Options

A. Nilgiri
B. Nanda Devi
C. Rann of Kutch
D. Sunderbans

Explanation

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about the first biosphere reserve that was established in 1986. We need to identify which of the given options corresponds to this biosphere reserve.

2. **Defining Biosphere Reserves**: Biosphere reserves are protected areas that aim to conserve biological diversity and promote sustainable development. They serve multiple purposes, including the protection of wildlife, the preservation of genetic diversity, and the support of the lifestyles of local communities.

3. **Analyzing the Options**:
- (a) Nilgiri
- (b) Nanda Devi
- (c) Rann of Kutch
- (d) Sundarbans

4. **Identifying the Correct Answer**:
- The first biosphere reserve established in India was indeed the Nilgiri Biosphere Reserve, which was created in 1986. It spans across the states of Kerala, Karnataka, and Tamil Nadu.
- The other options (Nanda Devi, Rann of Kutch, and Sundarbans) are also biosphere reserves but were established later.

5. **Conclusion**: Based on the information, the correct answer to the question is (a) Nilgiri.

**Final Answer**: (a) Nilgiri

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