3. A 20 percent decline in lobster catches in Maine waters since 1980 can be justifiably blamed on legislation passed in 1972 to protect harbor seals. Maine’s population of harbor seals is now double the level existing before protection was initiated, and these seals are known to eat both fish and lobsters.
Which of the following, if true, would most seriously weaken the argument above?
(A) Harbor seals usually eat more fish than lobsters, but the seals are natural predators of both.
(B) Although harbor seals are skillful predators of lobsters, they rarely finish eating their catch.
(C) Harbor seals attract tourists to Maine’s coastal areas, thus revitalizing the local economy.
(D) Authors of the 1972 legislation protecting harbor seals were convinced that an increase in that animal’s numbers would not have a measurably negative impact on the lobster catch.（E）
(E) The record lobster harvests of the late 1970’s removed large numbers of mature lobsters from the reproductive stock
答案：e,偶也选对了，可回头想的时候觉得好像不对，答案的意思是不是说实际1970‘s的龙虾捕获量并没有减少，所以weanken了原题的原因？
另外reprodutive stock,中文是什么意思？
选项b偶觉得也可以：seals没有吃啊，所以seals数量的增加和龙虾没有关系，但为什么又不能算weaken?
先致谢！ | 
ATE 1970的记录中没包括用于繁殖后代的储备虾.即实际上CATCH比记录的多,CATCH量没减少
