SARA is known for being aimed at improving what aspect of environmental safety?

The correct answer focuses on SARA, which stands for the Superfund Amendments and Reauthorization Act. This legislation was enacted to enhance the federal government's ability to respond to hazardous substance emergencies and to improve the cleanup of contaminated sites. SARA emphasizes the importance of emergency preparedness and response by establishing requirements for facilities that handle hazardous materials.

It mandates that facilities develop and implement contingency plans for emergencies, and outlines the need for public access to information about the presence of hazardous substances. Thus, the core aim of SARA revolves around preparing for potential environmental health crises and ensuring that responses are swift and effective.

In contrast, while the other options relate to important environmental issues, they do not capture the primary focus of SARA. Urban waste management, renewable energy adoption, and greenhouse gas reduction are vital components of environmental safety, but they are not the specific objectives addressed by this particular legislation.