Arrange the following sentences in the most logical order to convey a…

Arrange the following sentences in the most logical order to convey a coherent argument: 1. This approach has led to a significant reduction in emissions. 2. To combat climate change, implementing renewable energy sources is crucial. 3. If this trend continues, we can expect a healthier environment by 2030. 4. For instance, the shift to solar power in many countries has been highly effective.