The correct answer is 2 percent. According to data, the world’s most developed economies cut their greenhouse gas emissions by 2 percent from 1990 to 2008. Thank you for posting your question. I hope this answer helped you. Let me know if you need more help.
Under the Kyoto Protocol, it was agreed to reduce global emissions of six greenhouse gases by an average of 5.2% below 1990 levels between 2008, but the reality is that they did not exceed 2%.
