Question

A soap manufacturer wants to prove that their detergent works better to
remove tough stains. To conduct a valid experiment, what should be the
control group?
Your answer


Please help

Answer 1

Answer: An exact same stain but with no detergents or other chemicals added to it.

Explanation: A control group is defined as the group in the experiment that does NOT recueve any treatment by the researchers this shows that the control group should not have any detergent or anything else added to help get rid of the stain