Which two groups were mandated to cooperate in addressing lead issues?

The correct choice highlights the coordinated efforts between the U.S. Department of Housing and Urban Development (HUD) and the Environmental Protection Agency (EPA) in addressing lead-related hazards. HUD is responsible for ensuring safe and healthy living conditions in housing, particularly for low-income families, many of whom may be at risk of lead exposure due to old housing stock. The EPA, on the other hand, focuses on protecting human health and the environment, including regulating lead in various contexts such as drinking water and the removal of lead-based paint.

The collaboration between these two agencies is crucial as they both play vital roles in mitigating lead exposure risks and implementing regulations and educational initiatives aimed at reducing lead poisoning, especially among children. This cooperation enables comprehensive strategies that connect housing policies with environmental health standards.

The other combinations listed do not reflect the same level of synergy regarding lead issues. OSHA and DOT primarily deal with workplace safety and transportation regulations, not specifically with lead exposure. The FDA and USDA focus on food safety and agriculture, while FHA and SEC deal with housing finance and securities regulations, respectively, without a direct mandate to address environmental health issues related to lead.