Which of the following methods allows researchers to study cause-and-effect relationships?

Question

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Experimental studies allow researchers to manipulate variables and establish cause-and-effect relationships. Correlational studies, on the other hand, only show a relationship between variables and do not establish causation. Ethnography and descriptive studies are observational methods that do not manipulate variables and therefore cannot establish cause-and-effect relationships.

Which of the Following Methods Allows Researchers to Study Cause-And-Effect