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题库 / GMATLA-CR-58
Some species of Arctic birds are threatened by recent sharp increases in the population of snow geese, which breed in the Arctic and are displacing birds of less vigorous species. Although snow geese are a popular quarry for hunters in the southern regions where they winter, the hunting season ends if and when hunting has reduced the population by five percent, according to official estimates. Clearly, dropping this restriction would allow the other species to recover.
Which of the following, if true, most seriously undermines the argument?
Hunting limits for snow geese were imposed many years ago in response to a sharp decline in the population of snow geese.
It has been many years since the restriction led to the hunting season for snow geese being closed earlier than the scheduled date.
The number of snow geese taken by hunters each year has grown every year for several years.
As their population has increased, snow geese have recolonized wintering grounds that they had not used for several seasons.
In the snow goose's winter habitats, the goose faces no significant natural predation.
撤销限制，可以让人们一直杀snow geese, 可以增长其他物种数量
B 之前有禁令，人们就提前结束杀snow geese, 可以推出snow geese应该很难被杀，尽管snow geese are a popular quarry for hunters, 导致人们放弃率很高，现在撤销禁令也帮不到忙
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