Question ID:PT53 S1 Q9 Passage:Global surveys estimate the earth's population of nesting female leatherback turtles has fallen by more than two-thirds in the past 15 years. Any species whose population declines by more than two-thirds in 15 years is in grave danger of extinction, so the leatherback turtle is clearly in danger of extinction. Stem:Which one of the following is an assumption that the argument requires? Correct Answer Choice:AChoice A:The decline in the population of nesting female leatherback turtles is proportional to the decline in the leatherback turtle population as a whole. Choice B:If the global population of leatherback turtles falls by more than two-thirds over the next 15 years, the species will eventually become extinct. Choice C:The global population of leatherback turtles consists in roughly equal numbers of females and males. Choice D:Very few leatherback turtles exist in captivity. Choice E:The only way to ensure the continued survival of leatherback turtles in the wild is to breed them in captivity.