“Climate change remains one of the most pressing issues facing humanity today. If governments worldwide commit to reducing greenhouse gas emissions, there is a chance that global temperature increases can be limited to safer levels. However, if current trends continue unchecked, the consequences will be catastrophic, affecting ecosystems and societies alike. Scientists emphasize that, if early mitigation measures had been implemented decades ago, the severity of current impacts could have been significantly reduced.”

The sentence which correctly uses a conditional structure and maintains the intended meaning based on the context above is: