Answer:
Cohort study
Explanation:
Cohort study: The cohort study is defined as a longitudinal study that takes a sample of cohort that performs a cross-section at different intervals concerning time.
In this context, the cohort is known as a particular group of individuals who incorporates a defining character, usually those individuals who have accomplished a specific event in a particular period, like birth order.
Cohort study comes under the observational studies.
Example: In the question above the researcher wants to identify the impact of cholesterol on the development of heart disease.
The livestock used up food resources needed for the public and the livestock can also be used as a way to feed the public. During the Great Depression, there was a lack of food for the general public due to the lack of jobs and most people required new ways to make money.
Hope this helps somewhat!
