I believe the correct lines are:
2. "…it creates an unsustainable pace of deforestation that leads to mudslides…"
4. "…a pollutant that contributes directly to climate change."
In this excerpt from “A Cooking Revolution: How Clean Energy and Cookstoves Are Saving Lives” written by Chef Jose Andres, the lines from the passage best support the author's concern with environmental activism are: "…it creates an unsustainable pace of deforestation that leads to mudslides…" and "…a pollutant that contributes directly to climate change."
These lines best support authors concern for environmental activism as they describe the outcome of the cooking using firewood, coal and or dung – deforestation and climate change, which later affect other realms of our lives (such as our health).