In a study, which of the following is the most important reason to use random allocation of subjects to the different treatments? O To guarantee that the results of the experiment can never be duplicated O To ensure that the different treatment groups are as similar as possible in every way except for the treatment received O To guarantee that approximately the same number of subjects is assigned to each treatment group O To ensure that each subject in the trial receives the best possible treatment O To protect the experimenters from legal action in the event that the experiment goes drastically awry