President Carter established Superfund sites to clean up polluted areas across the United States. Option D is the correct answer.
Superfund is a federal government program in the United States that was established as part of the Comprehensive Environmental Response, Compensation, and Liability Act of 1980 with the goal of funding the cleanup of sites polluted with hazardous substances and pollutants. These are the "Superfund" sites that are managed by this program.
Learn more about Superfund sites, here-
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