Question

what is the primary focus of cercla, also known as the superfund law?
to collect as much money as possible
cleaning up hazardous waste sites
increasing water pollution
identifying hazardous materials

Explanation:

CERCLA (Comprehensive Environmental Response, Compensation, and Liability Act), or Superfund law, is mainly about cleaning up hazardous waste sites. It provides a fund for the cleanup of abandoned or uncontrolled hazardous waste sites. Collecting money is part of the means (through taxes on chemical and petroleum industries) to support the cleanup, not the primary focus. Increasing water pollution is the opposite of its goal. Identifying hazardous materials is a part of the process but not the main focus compared to the overall cleanup of sites.

Answer:

cleaning up hazardous waste sites