The group in an experiment that is not manipulated (or only sham or mock manipulated) and is maintained under a standard set of conditions is called the group. Type an answer

control group

Explanation:

In simple words, The control group can be  described as a group in an analysis or trial that does not obtain attention from investigators and is then seen as a reference to assess how other participants are tested.

The control group becomes a category isolated from the remainder of the process so that the predictor variables being evaluated can not affect the outcome. This separates the influence of an explanatory variables mostly on procedure and can aid to rule out possible interpretations of the study results.