Question ID:PT85 S3 Q6 Passage:Watanabe: To protect the native kokanee salmon in the lake, we must allow fishing of native trout. Each mature trout eats about 250 mature kokanee annually.Lopez: The real problem is mysis shrimp, which were originally introduced into the lake as food for mature kokanee; but mysis eat plankton‚ young kokanees' food. The young kokanee are starving to death. So eradicating the shrimp is preferable to allowing trout fishing. Stem:Which one of the following principles, if valid, most strongly supports Lopez's conclusion? Correct Answer Choice:AChoice A:Eliminating a non-native species from a habitat in which it threatens a native species is preferable to any other method of protecting the threatened native species. Choice B:When trying to protect the food supply of a particular species, it is best to encourage the method that will have the quickest results, all else being equal. Choice C:The number of species in a given habitat should not be reduced if at all possible. Choice D:No non-native species should be introduced into a habitat unless all the potential effects of that introduction have been considered. Choice E:When seeking to increase the population of a given species, it is most important that one preserve the members of the species who are in the prime reproductive stage of their lives.