A. 1988
B. 1982
C. 1984
D. 1981
✅ The correct answer is option C.
In 1983 the then Prime Minister of India, Indira Gandhi, decided to abandon the Project. In the year of 1984, it was declared as a National Park with the project area included. In 1986, the Silent Valley was declared the core area in the Nilgiri Biosphere Reserve.
In 1983 the then Prime Minister of India, Indira Gandhi, decided to abandon the Project. In the year of 1984, it was declared as a National Park with the project area included. In 1986, the Silent Valley was declared the core area in the Nilgiri Biosphere Reserve.