I believe the answer is: Naturalistic theory
Naturalistic theory refers to the theory which see that everything that happen in universe could always be explained by logical approach. In research, having this theory would make researchers reluctant to make conclusion without objective evidence.
D because that was to happen to every person unlike the others
Answer:
Control
Explanation:
In a study of whether a drug might help reduce depression, research participants were assigned to take the drug or a placebo. Those who took the placebo were in the control condition.
In an experiment, the control group are not given the treatment material (drugs in this case). This is to have a basis for comparison of results of the study.
A placebo drug is manufactured not to have any treatment effect on the subjects.
