Answer :
Answer: Control group
Explanation: Control group refers to the group in an experiment or study that researchers does not give treatment to and is further used as a gauge or benchmark to measure the performance of tested group.
However, the control group increases the credibility and reliability of the outcomes or results, often through a comparison between outcome of the control group and the outcome of the experimental group.
Answer: Experimental group
Explanation:
An experimental group is adopted in an experiment to test a variable, it is used in comparison to a control group. The experimental group is made up of the test subject which could be people, animals etc.
The control group helps to test how reliable or credible a result is.