nightblade354 wrote:
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.
The reasoning in the environmentalists' criticism is questionable because it:
A. Treats as similar two cases that are different in a critical respect
B. Justifies generalization on the basis of a single instance
C. Fails to distinguish the goal of reversing harmful effects from preventing those harmful effects
D. Attempts to compare two quantities that are not comparable in any way
E. Presupposes that experiments always do harm to their subjects
Options A and C are the two contenders.
C. Fails to distinguish
the goal of reversing harmful effects from preventing those harmful effects
How could we say that the environmentalists have failed to distinguish the
GOAL of reversing harmful effects from preventing those harmful effects? They know the goal of the space mission; Their argument is that it is comparable to the factory with respect to the pollution it created.
A. Treats as similar two cases that are different in
a critical respectCorrect choice. The space mission will collect crucial data that will help the scientists; a factory will only create the problem they are trying to solve.