In an experiment, the group that nothing is done to; it is used for comparison A) experimental group B) control group C) hypothesis group D) variable group

B) Control group

Explanation:

Control group in an experiment is set separately such that the independent variable cannot apply any changes to them, its standard is either maintained or left unchanged. It is also used to compare results, by eliminating or isolating any variables to determine its effect in whole the experiment, against the control.

Examples of control groups are; temperature, light, use of certain compounds or standard solutions, quantity or size.