“Bạn sinh ra là một nguyên bản, đừng chết như một bản sao.” (John Mason) Hãy trình bày suy nghĩ của anh/ chị về ý nghĩa của câu nói trên(Nghị luận xã hội bao gồm đầy đủ các bước)

Martha participates in a research study in order to receive extra credit for her psychology class. when she arrives in the research office she is given a can of what looks and tastes like beer, but which actually contains no alcohol. in the adjoining room martha's classmate karen is also participating in the study. karen receives a can of alcoholic beer. if the experiment was designed to test the effects of alcohol on concentration, then who is exposed to the independent variable?