Final answer:
The federal program involved in cleaning up toxic waste dumps and financed by tax revenues is the EPA Superfund.
Step-by-step explanation:
The federal program involved in cleaning up toxic waste dumps and financed by tax revenues is the EPA Superfund (a).
The Environmental Protection Agency (EPA) is responsible for overseeing and monitoring hazardous waste sites that are dangerous enough to be placed on the National Priorities List. Through the Superfund program, the EPA conducts cleanup activities to protect the environment and the health of all Americans.