Answer:
The answer is - Epidemiological studies
Step-by-step explanation:
The options are;
a. Clinical studies
b. Basic medical research studies
c. Market research studies
d. Epidemiological studies
The answer is D- Epidemiological studies.
Epidemiology deals with the study of diseases in human or animal population, how they occur, when the occur and where they occur. It helps determine the factors associated with diseases and what factors can help protect against these diseases.
Epidemiological studies are used to estimate the frequency of a disease and find potential causes for the occurrence of the disease.
Therefore scientist carry out epidemiological studies through the use of interviews, surveys and measurements in order to study a large group of people.