Which of the following statements about experiments is true?

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They can be carried out in both natural environments and controlled labs.There is a possibility that participants change their behavior during the study.Experiments require the inclusion of some type of control group.All of the above statements are correct.

Explanation

Experiments may take place in either field settings or laboratories, participants might alter their behavior due to being observed, and having control groups is essential to properly conduct experiments. Therefore, all these points are accurate.