The fishing industry cannot currently be relied upon to help the government count the seabirds killed by net fishing, since an accurate count might result in restriction of net fishing. The government should therefore institute a program under which tissue samples from the dead birds are examined to determine the amount of toxins in the fish eaten by the birds. The industry would then have a reason to turn in the bird carcasses, since the industry needs to know whether the fish it catches are contaminated with toxins.
Which one of the following, if true, most strengthens the argument?The argument’s point is that
testing dead seabirds for toxins would give the fishing industry a new reason to turn in bird carcasses, which would help the government count how many seabirds are killed by net fishing. So the best strengthening answer is the one that shows the government really does need the industry’s cooperation in order for this plan to work.
(A) The seabirds that are killed by net fishing do not eat all of the species of fish caught by the fishing industry.
This weakens rather than strengthens. If seabirds eat only some of the fish species, then toxin information from the birds may be less useful to the industry.
(B) The government has not in the past sought to determine whether fish were contaminated with toxins by examining tissue samples of seabirds.
This does not help much. The issue is whether the new program would motivate the industry to cooperate, not whether the government has tried this before.
(C) The government cannot gain an accurate count of the number of seabirds killed by net fishing unless the fishing industry cooperates.
This is the best answer. If an accurate count depends on industry cooperation, then giving the industry a reason to turn in carcasses becomes much more valuable. This directly strengthens the argument for the proposed program.
(D) If the government knew that fish caught by the fishing industry were contaminated by toxins, the government would restrict net fishing.
This weakens the argument. If the industry expects toxin findings to trigger restrictions, then it has less reason to cooperate.
(E) If net fishing were restricted by the government, then the fishing industry would become more inclined to reveal the number of seabirds killed by net fishing.
This does not strengthen the proposed plan. The issue is how to get cooperation now, before restrictions, not after them.
Answer: (C)