Question ID:PT44 S2 Q4 Passage:The top 50 centimeters of soil on Tiliga Island contain bones from the native birds eaten by the islanders since the first human immigration to the island 3,000 years ago. A comparison of this top layer with the underlying 150¬†centimeters of soil‚ accumulated over 80,000¬†years‚ reveals that before humans arrived on Tiliga, a much larger and more diverse population of birds lived there. Thus, the arrival of humans dramatically decreased the population and diversity of birds on Tiliga. Stem:Which one of the following statements, if true, most seriously weakens the argument? Correct Answer Choice:CChoice A:The bird species known to have been eaten by the islanders had few natural predators on Tiliga. Choice B:Many of the bird species that disappeared from Tiliga did not disappear from other, similar, uninhabited islands until much later. Choice C:The arrival of a species of microbe, carried by some birds but deadly to many others, immediately preceded the first human immigration to Tiliga. Choice D:Bones from bird species known to have been eaten by the islanders were found in the underlying 150¬†centimeters of soil. Choice E:The birds that lived on Tiliga prior to the first human immigration generally did not fly well.