Which of the following is a key determinant of health related to environmental public health?

Air and water quality is a critical determinant of health within the context of environmental public health because it directly influences the physical health of communities and individuals. Clean air and safe drinking water are fundamental requirements for maintaining good health, as they impact respiratory and cardiovascular conditions, as well as a myriad of other health issues.

When air quality degrades due to pollution, it can result in respiratory diseases, cardiovascular problems, and even cancer. Similarly, contaminated water can lead to a host of health issues, including gastrointestinal diseases, reproductive problems, and neurological impairments. Hence, assessing and improving air and water quality are central focuses in environmental health initiatives aimed at preventing illness and promoting overall community health.

Other options, while they are important determinants in understanding overall health, do not directly relate to environmental factors in the same way that air and water quality do. Genetics play a role in individual health, education level is crucial for health literacy, and access to health services influences health outcomes, but none specifically address the environmental conditions that are vital for public health.