Answer:
Sugar capsules
Explanation:
Control group: In psychological research, the term control group is referred to as a group in a particular research, study, or an experiment that doesn't get any treatment by the experimenter or the researcher and therefore it is being used as a set-point or benchmark to analyse the way other tested subjects work in an experiment or research.
In the question above, sugar capsules are being given to the subjects who belongs to the control group of the trail as sugar capsules are being treated as a placebo that doesn't have any impact on the subjects being the part of the experiment.
