What type of study is conducted by the CDC?

The Centers for Disease Control and Prevention (CDC) primarily conducts public health research, which encompasses a broad range of activities aimed at improving health outcomes for populations. This type of research involves the collection and analysis of data related to health trends, disease outbreaks, and program effectiveness. Public health research helps in formulating policies, creating health guidelines, and implementing prevention strategies that can address health issues at a community or national level.

Public health research includes epidemiological studies, health services research, and the evaluation of health interventions. This work is essential for understanding the prevalence and causes of diseases, as well as for developing effective public health programs and policies.

Other options like clinical trials, environmental assessments, and biological experimentation may be conducted by various organizations or in specific contexts, but they do not capture the primary mission of the CDC, which focuses on the health of populations through systematic study and research.