Question ID:PT34 S3 Q24 Passage:Ringtail opossums are an Australian wildlife species that is potentially endangered.  A number of ringtail opossums that had been orphaned and subsequently raised in captivity were monitored after being returned to the wild.  Seventy-five percent of these opossums were killed by foxes, a species not native to Australia.  Conservationists concluded that the native ringtail opossum population was endangered not by a scarcity of food, as had been previously thought, but by non-native predator species against which the opossum had not developed natural defenses. Stem:Which one of the following, if true, most strongly supports the conservationists' argument? Correct Answer Choice:EChoice A:There are fewer non-native predator species that prey on the ringtail opossum than there are native species that prey on the ringtail opossum. Choice B:Foxes, which were introduced into Australia over 200 years ago, adapted to the Australian climate less successfully than did some other foreign species. Choice C:The ringtail opossums that were raised in captivity were fed a diet similar to that which ringtail opossums typically eat in the wild. Choice D:Few of the species that compete with the ringtail opossum for food sources are native to Australia. Choice E:Ringtail opossums that grow to adulthood in the wild defend themselves against foxes no more successfully than do ringtail opossums raised in captivity.