GRE Reading Comprehension: JiJing 352-GRE阅读机经352篇 - G75KY4XP_E797XXNJ

Which of the following, if true, most seriously weaken the argument given? A. Princessfish cannot be captured alive by traditional methods of fishing. B. The poison used to stun the princessfish has no effect on humans who eat them. C. Demand for princessfish has remained steady during the last decade. D. Traces of the poison that remain in the seawater damage the Corals that create and maintain the reefs on which princessfish depend. E. Fish that have been stunned but have selected for capture by the divers soon recover from the temporary effect of the poison.