A researcher separates the participants into two groups. Group A receives an active medication, and Group B receives an empty capsule that looks and feels like the real medication. Group B is the

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Group B is the control group as they are receiving a placebo instead of the active medication being tested. The control group is used to compare the effects of the active medication to the effects of not receiving any medication, in order to determine whether the active medication is actually effective. The other options are not correct because Group A is the treatment group, the term "analog group" is not a commonly used term in research, and the term "experimental group" could be used for either group A or B, depending on the context.

A Researcher Separates the Participants into Two Groups