Answer: All the answers/ options are correct.
Explanation: By way of definition, Epidemiology is the study of how diseases affect the health and illness of populations. It aims to act in the interest of public health and preventive medicine. It also important in public health research. It identifies risk factors for disease and suggests best treatment methods in clinical practice.
Epidemiologists start from outbreak investigation to study design, data collection and analysis. They use statistical models to test hypotheses and they document results. Epidemiologists also study the interaction of diseases in a population. Epidemiologists use biology (to better understand disease processes), statistics (to design and understand good studies), computers (to store data and map disease patterns) and social science disciplines, to boost understanding in a widal scope
of the cause of epidemics.
Many epidemiologists are physicians, or hold appropriate graduate degrees. Some epidemiologists work in the community, commonly in a public health/health protection service. They are at the forefront of investigating and combating disease outbreaks.
Also it is important to note that epidemiological practice and the results of epidemiological analysis make a significant contribution to health management such as
i. Assess the health states and needs of a target population
Implement and evaluate interventions.
ii. Provide care for members of that population.
iii. Modern population-based health management is complex.
However, Epidemiological practice and analysis is a core component as it's task requires the forward looking ability to guide how a health system responds to current health issues, and how a health system can respond to future potential population health issues.