Which of the following is an assumption on which the argument depends?
(A) The use of acoustic alarms increases the number of commercial fish caught by the fishing company's boats.
(B) When disoriented, harbor porpoises are not significantly more likely to be killed by other boats.
(C) Environmentalists advocate the use of acoustic alarms as a means of protecting the harbor porpoise population.
(D) The alarms were installed at the time of year when harbor porpoises are most plentiful in the Massachusetts waters.
(E) The cost of installing acoustic alarms on fishing boats is less than the cost of repairing nets damaged by harbor porpoises.
为什么答案是A呢?貌似完全没什么关系啊?难道是说alarm有效果?麻烦高手帮忙分析下B错哪了?不是NOT-WEAKEN?
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