The correct answers are:
1. **Resource Conservation and Recovery Act** (RCRA) - **b. Coordinates the federal government’s activities relating to environmental protection**.
2. **Solid Waste Disposal Act** (SWDA) - **a. Mandates that landfills are sanitized**.
The RCRA is a federal law that regulates the management of hazardous waste in the United States. It was passed in 1976 and has been amended several times since then. The SWDA is a predecessor to the RCRA and was passed in 1965. It established the basic framework for solid waste management in the United States.