In a certain wildlife park, park rangers are able to track the movements of many rhinoceroses because those animals wear radio collars. When, as often happens, a collar slips off, it is put back on. Putting a collar on a rhinoceros involves immobilizing the animal by shooting it with a tranquilizer dart. Female rhinoceroses that have been frequently recollared have significantly lower fertility rates than uncollared females. Probably, therefore, some substance in the tranquilizer inhibits fertility.
In evaluating the argument, it would be most useful to determine which of the following?
这题说的是weaken还是strength呢 楼上的解释没看懂 C is the answer since 1) If further evidence shows that never-recollared females who have been tranquilized also have low fertility, then the argument is strengthened. 2) If futher evidence shows that never-recollared females who have been tranquilized do NOT have low fertility, then the argument is weakened. 1)怎么能是加强,我看是weaken。文章后段说的是recollar female who has tranquilized has lower fertility than uncollar