Question ID:PT15 S2 Q1 Passage:Walter: Although cigarette smoking is legal, it should be banned on all airline flights. Cigarette smoking in the confines of an aircraft exposes nonsmokers to harmful secondhand smoke that they cannot avoid. Stem:Which one of the following principles, if established, would justify the proposal put forth by Walter? Correct Answer Choice:AChoice A:People should be prohibited from engaging in an otherwise legal activity in those situations in which that activity would unavoidably expose others to harm. Choice B:An activity should be banned only if most situations in which a person engages in that activity would inevitably expose others to harm. Choice C:A legal activity that has the potential for causing harm to others in certain situations should be modified in those situations to render it harmless. Choice D:People who regularly engage in an activity that has the potential for harming others when that activity takes place in certain situations should be excluded from those situations. Choice E:If an activity is legal in some situations in which a person’s engaging in that activity could harm others, then that activity should be legal in all situations.