What encompasses the "System of vital statistics"?

The correct answer captures the essence of the "System of vital statistics," which refers to the systematic gathering, maintenance, and analysis of data regarding births, deaths, marriages, and other life events. This system plays a crucial role in public health by providing essential information that can inform policy decisions, health services planning, and resource allocation.

By focusing on the collection and preservation of health data, the vital statistics system ensures that accurate records are kept over time, enabling authorities to assess population trends and health outcomes. The gathered data can be utilized to track public health issues, influence health education, and formulate responses to healthcare needs in the community.

While other options may involve aspects of healthcare and medical practice, they do not specifically address the comprehensive role of vital statistics in public health, which is fundamentally about data collection and its preservation for statistical analysis and public policy.