When testing a new drug for an illness, which of these is not a major reason to use a control group?

Question

Quizplus · Accepted Answer

Using a control group primarily helps in distinguishing the effects of the drug from other factors such as the placebo effect, the natural progression of the illness, and the stress of treatment. It does not serve to distinguish the effects of different drugs from one another; that would require a different experimental setup, often involving multiple control groups or a comparative study design.

When Testing a New Drug for an Illness, Which of These