I greatly struggled with this question in understanding the question stem: it's really convoluted. In the end I realized that there is an easy way to cope with the issue especially under exam conditions when the GMAT fatigue haunts your mind and tends to make you blind.
One can easilyconvert the complex stem:
"Which of the following, if true, provides the strongest reason for discounting the evidence Perkins cites in arguing against the contention that being hunted by humans contributed
...
One can easilyconvert the complex stem:
"Which of the following, if true, provides the strongest reason for discounting the evidence Perkins cites in arguing against the contention that being hunted by humans contributed
...






