I believe the answer is C
Answer:
Methods to deal with water scarcity are increasing: storage infrastructure through water recycling, improving farming practices, upgrading sewage systems, and desalination plants. Governments must invest in infrastructure to help alleviate the water scarcity problem in the long-run.
People should be taught not to use too much water. They need new Conservation Technologies. Maybe even recycle Wastewater. Improve Agriculture Water Use. Change water Pricing. Rain Water Harvesting. Community Governance and Partnerships.
Developing countries are most vulnerable to water scarcity. Sometimes even places like the Central African Republic.
The answer is are because its a verb that is stating something.
