what does a control group show in an experimental investigation?\n the effects that the scientists are…

what does a control group show in an experimental investigation?\n the effects that the scientists are causing by manipulating variables\n how nature would act without manipulation by the researchers\n why each part of a system is related to every other part\n all parts of a system that scientists are controlling and changing
Answer
Brief Explanations:
A control group in an experiment is left unchanged to serve as a baseline. It shows how things would be in the absence of the experimental manipulation.
Answer:
how nature would act without manipulation by the researchers