Life on Earth depends on water. Unfortunately, water is the world' s most threatened natural resource as a result of unrelenting pollution. In the near future, wars will be fought over clean drinking water, as climate change reduces the amount of potable water and pollution taints the drinking water. However, this trend can be broken. Citizens around the globe can aggressively lobby their governments to invest in sustainable energy sources, cleanup polluted waterways, and implement regulations to prevent commercial dumping. Citizens can also have a lasting impact by recycling and taking other steps to reduce their household' s biological footprint. As long as citizens actively respond, then the crisis can be mitigated. What is the argument's primary purpose? ['To criticize the status quo in government.', 'To spur activism amongst citizens.', 'To inform citizens about the consequences of continued pollution.', 'To promote the benefits of recycling.']