What does the Environmental Protection Agency (EPA) focus on?

The Environmental Protection Agency (EPA) is primarily concerned with safeguarding the environment and ensuring public health through the regulation of pollutants and emissions, oversight of chemical safety, and management of waste. Their mission encompasses various areas including air and water quality, hazardous waste management, and the protection of ecosystems. This focus is crucial for maintaining a safe and healthy environment, which is a foundation for public health. By prioritizing environmental protection, the EPA plays a significant role in preventing health hazards linked to environmental factors, making option B the correct choice.

In this context, the other options, while related to aspects of public health or food quality, do not align with the core mission of the EPA. Regulating food quality standards typically falls under the authority of agencies like the Food and Drug Administration (FDA), monitoring nutritional supplements does not pertain to the EPA's environmental focus, and promoting culinary arts education is outside the purview of governmental environmental regulation.