Which study tries to investigate cause-and-effect relationships and involves manipulation of variables?

Name: Which study tries to investigate cause-and-effect relationships and involves manipulation of variables?
Brand: Quizplus
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Question

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The experimental study involves manipulation of variables to investigate cause-and-effect relationships. The other options (trend, correlational, and survey) do not involve manipulation of variables and do not necessarily investigate cause-and-effect relationships.

Which Study Tries to Investigate Cause-And-Effect Relationships and Involves Manipulation