In which of the following years did the Ramsar convention to promote conservation and wise use of all wetlands through regional actions and international cooperation come to force in India?

1982

The correct answer is Option (4) - 1982

Ramsar convention to promote conservation and wise use of all wetlands through regional actions and international cooperation came to force in India in 1982. India is a party to the Ramsar Convention. India signed under it on 1^st February 1982. The term was coined when the International Treaty for the Conservation and Sustainable Use of Wetlands was signed in a city in Iran called Ramsar in 1971.