Discussion

Explanation:

Normal 0 false false false EN-US X-NONE X-NONE Option 1 has already been mentioned in the first statement of the paragraph. This does not make it an effective paragraph ending.
Option 2 mentions only OECD countries while the paragraph mentions “powerful industrialized countries” of which the OECD countries are only a part. Furthermore, the option is again a repetition of ideas presented in the paragraph.
The focus of option 3 is on ‘China’ and ‘India’, while the focus of the paragraph is not.
Option 5 brings in ‘global economic inequity’ which is an opinion not expressed or implied in the passage.
Option 4 addresses the gist of the paragraph. Powerful countries, including the OECD countries are posing as climate change champions due to their lacklustre economic performance as compared to China and India which are growing rapidly. ‘Climate change champions’ in this option completes the paragraph, and addresses the point raised in the first sentence.
Hence, the correct answer is option 4.

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