The correct statement is c. India joined the Montreal Protocol in 1990.

Here's why the other statements are incorrect:

a. India did join the Vienna Convention. It became a party to the Vienna Convention for the Protection of the Ozone Layer in 1991.

b. The Montreal Protocol was not held before the Vienna Convention. The Vienna Convention was in 1985, and the Montreal Protocol was in 1987.

d. The Montreal Protocol did not come into force in 1989. It came into force on January 1, 1989.

Question

The correct statement is c. India joined the Montreal Protocol in 1990.

Here's why the other statements are incorrect:

a. India did join the Vienna Convention. It became a party to the Vienna Convention for the Protection of the Ozone Layer in 1991.

b. The Montreal Protocol was not held before the Vienna Convention. The Vienna Convention was in 1985, and the Montreal Protocol was in 1987.

d. The Montreal Protocol did not come into force in 1989. It came into force on January 1, 1989.

Knowee AI · Accepted Answer

The correct statement is c. India joined the Montreal Protocol in 1990.

Here's why the other statements are incorrect:

a. India did join the Vienna Convention. It became a party to the Vienna Convention for the Protection of the Ozone Layer in 1991.

b. The Montreal Protocol was not held before the Vienna Convention. The Vienna Convention was in 1985, and the Montreal Protocol was in 1987.

d. The Montreal Protocol did not come into force in 1989. It came into force on January 1, 1989.

Which is the correct statementa.India never joined the Vienna Conventionb.Montreal Protocol was held before the Vienna Conventionc.India joined the Montreal Protocol in 1990d.Montreal Protocol came into force in 1989