Question

g In order to assess the effects of exercise on reducing cholesterol, a researcher sampled 50 people from a local gym who exercised regularly and 50 people from the surrounding community, who, it was assumed, did not exercise regularly. Each subject reported to a clinic to have their cholesterol measured. The subjects were unaware of the purpose of the study, and the technician measuring the cholesterol was not aware of whether the subjects exercised regularly or not. What type of study is this

Answer 1

An observational study.

Step-by-step explanation:

Observational studies are those studies in which the researchers note the effects of risks factor, diagnostic test, or treatment without interrupting in it by changing anything. It is an investigative study that aims at distinguishing the effects caused by the treatment.

In the given case, the researcher has used the observational study method to identify the effects of exercise on reducing the cholesterol level. He divided the people into two groups with 50 each. The research was performed without an awareness of these people as well as the technician measuring the cholesterol level. Thus it exemplifies an observational study.

So, the correct answer is the observational study.