Why is it Necessary for every experiment to include a control group? A: the control group represents experimental conditions and used for comparison. B: The control group represents normale conditions and always changes. C: The control group represents the experimental conditions and always changes. D: The control group represents normal conditions and is used for comparison. IF YOU HAVE SNAP CHAT AND CAN HELP ME ADD ME awesomelucygirl! I have like 6 more questions :D