In 1992 outlaw fishing boats began illegally harvesting lobsters from the territorial waters of the country of Belukia. Soon after, the annual tonnage of lobster legally harvested in Belukian waters began declining; in 1996, despite there being no reduction in the level of legal lobster fishing activity, the local catch was 9,000 tons below pre-1992 levels. It is therefore highly likely that the outlaw fishing boats harvested about 9,000 tons of lobster illegally that year.
Which of the following is an assumption on which the argument depends?
The illegal lobster harvesting was not so extensive that the population of catchable lobsters in Belukia's territorial waters had sharply declined by 1996.
The average annual lobster catch, in tons, of an outlaw fishing boat has increased since 1992.
Outlaw fishing boats do not, as a group, harvest more lobsters than do licensed lobster-fishing boats.
The annual legal lobster harvest in Belukia in 1996 was not significantly less than 9,000 tons.
A significant proportion of Belukia's operators of licensed lobster-fishing boats went out of business between 1992 and 1996.
选项B: 说非法渔船每年打捞量在增加,也跟1996年无关
C:渔船比龙虾船打捞的少,跟conclusion无关
D: 已知,文中说了龙虾打捞工作没有减少
E: 渔夫少了,但工作量没有减少,所以与conclusion无关
A: negation:如果非法打捞已经很普遍了,那少90000ton就不只是1996年的事了,可能因为前几年而造成1996少那么多
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