You can do this ask a teacher for help
Answer:
Observational study
Explanation:
An observational study is a type of study in which individuals are observed and certain measures are measured but there's no intend to affect the actual outcome. In other words, no treatment is given to the individuals and there's no intervention done by the researcher.
In this example, the study aims to evaluate the percent of adults whose right cerebral hemisphere is larger than the right hemisphere. 20 people come and have their brains scanned. Then, the scan is analyzed to identify which hemisphere is larger.
In this study, we can see how <u>individual's brains were observed and some measures were taken but there was no treatment given to them</u> (the researchers were only interested in knowing which hemisphere was bigger).
Thus, this is an example of observational study.
America did not enjoy much of the early years because of continuous war. When entertainment came, it was a way of escaping from the tensions that war had brought. Advertisements, however, were more focused on the needs of an individual than of the many people. They tried to do research on the war to create an inviting atmosphere on their advertisements. Thus, it brings comfort to individual's needs. Brand names also came out on products to remember it.
I believe the answer is: Passing campaign finance laws
The federal government would only be involved in creating and maintaining regulations that would affect the whole states in united states. Campaign finance laws is a form of regulation which regulate how political candidates from ALL states able to obtain their funding.
