Which of the following is an example of a public health intervention?

Implementing sanitation measures in communities is considered a public health intervention because it directly targets the improvement of community health through actions that prevent disease and promote well-being. Sanitation measures can include the provision of clean drinking water, proper sewage disposal, and waste management systems. These efforts are crucial in reducing the incidence of infectious diseases, which often thrive in unsanitary conditions. By creating a healthier environment, these interventions can lead to a significant decrease in disease transmission and improve overall community health outcomes.

In contrast, conducting a survey on health trends primarily serves as a research tool to gather data rather than implementing a specific action to improve health. Providing health care only to injured individuals focuses on treatment rather than preventive measures and community-wide health initiatives. Restricting movement in rural populations may serve as a control measure during an outbreak but does not equate to an active promotion of public health and can raise ethical issues. Thus, it is the implementation of sanitation measures that epitomizes a proactive approach to enhancing public health in communities.