Rabbits were introducedto Numa Island
in the nineteenth century. Overgrazing by the enormous population ofrabbits now menaces the island’s agriculture. The government proposes to reduce the population by using a virus thathas caused devastating epidemics in rabbit populations elsewhere. There is, however, a chance that the viruswill infect the bilby, an endangered native marsupial. The government’s plan, therefore, may servethe interests of agriculture but will clearly increase the threat to nativewildlife.Which of the following,if true, most seriously weakens the argument?
A. There is less chance that the virus will infect domesticanimals on Numa than that it will infect bilbies.
B. There are no species of animals on the island that prey onthe rabbits.
C. Overgrazing by rabbits endangers many of the plants onwhich bilbies feed.
D. The virus that the government proposes to use has beensuccessfully used elsewhere to control populations of rabbits.
E. There is no alternative means of reducing the rabbitpopulation that would involve no threat to the bilby.
我选的E,答案是C.我觉得C的解释Okay，但是E错在哪里？求大牛解答，在线等答案，谢谢各位 | 
