What is the main idea of this text?
A-Grasslands can help slow climate change in areas with wildfires because they store carbon in their roots, which don’t burn and release carbon during fires.
B-The best way to slow climate change in areas with wildfires is to plant many large trees that might be able to survive through wildfires.
C-Many types of grasses, including western wheatgrass and switchgrass, grow in grasslands in the United States, and these plants support different kinds of animals.
D-Earth is getting warmer for many reasons, but the biggest reason is carbon dioxide being released into Earth’s atmosphere.