Question

what is a control group? a group that is measured or observed a group that does not receive the experimental treatment a factor that is kept the same in an investigation a group that is manipulated or changed to study its effect

Explanation:

In an experiment, a control group serves as a baseline. It is not exposed to the experimental treatment, allowing researchers to compare results with the experimental group to determine the treatment's effect.

Answer:

B. A group that does not receive the experimental treatment