Arrange the following International agreements/efforts pertaining to environmental protection in chronological order. Choose the correct answer from the options given below:

1.Stockholm conference (UNCHE)

2.Paris agreement

3.Montreal protocol

4.Kyoto protocol

5.Earth Summit (UNCED)

A1, 5, 3, 4, 2

B1, 3, 5, 4, 2 ✓ Correct

C3, 5, 1, 2, 4

D5, 1, 3, 2, 4

Correct answer: (B) 1, 3, 5, 4, 2

Explanation

These environmental efforts fall into a clear chronological order by year.

The Stockholm Conference was the first, held in 1972.

The Montreal Protocol on ozone-depleting substances followed in 1987.

The Earth Summit at Rio came in 1992.

The Kyoto Protocol on greenhouse gases was adopted in 1997.

The Paris Agreement was the most recent, adopted in 2015.

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