Question ID:PT33 S3 Q15 Passage:Scientists hoping to understand and eventually reverse damage to the fragile ozone layer in the Earth's upper atmosphere used a spacecraft to conduct crucial experiments.  These experiments drew criticism from a group of environmentalists who observed that a single trip by the spacecraft did as much harm to the ozone layer as a year's pollution by the average factory, and that since the latter was unjustifiable so must be the former. Stem:The reasoning in the environmentalists' criticism is questionable because it Correct Answer Choice:AChoice A:treats as similar two cases that are different in a critical respect Choice B:justifies a generalization on the basis of a single instance Choice C:fails to distinguish the goal of reversing harmful effects from the goal of preventing those harmful effects Choice D:attempts to compare two quantities that are not comparable in any way Choice E:presupposes that experiments always do harm to their subjects