Select C for reasons for failing to vote that can be overcome by the citizen. Select N for reasons that cannot be overcome by the citizen. intimidation by a social superior legal restrictions inclement weather that blocks access to polls lack of information on candidates failure to register

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?