Pandas are rapidly disappearing from the wild. Ttherefore, in order to preserve the species, existing pandas should be captured and placed in zoos around the world. Which of the following statements, if true, casts most doubt on the conclusion drawn above? ['Newborn pandas in zoos are not likely to die from infectious diseases, whereas newborn pandas in the wild are likely to die from these diseases.', 'Pandas in zoos have as many offspring that survive to adulthood as do pandas in the wild.', "Sufficient quantities of bamboo, the panda's only food, cannot be made available outside the panda's native habitat.", 'Many zoos are eager to increase their stock of rare and exotic animals, but there are not enough pandas for all the zoos that want one.']