Hello,
Argument Analysis:
--- Prevalence of a simian virus is directly correlated with population density in gorillas
--- MPG more likely to be infected than KPG
--- Infection detection process in these gorillas involves capturing gorillas and testing the gorillas for the virus
Conclusion:
Nevertheless, the population density of KPG is significantly greater than that of MPG.
So, this is a paradox question.
Pre-thinking:
How to resolve this paradox? What if higher number of MPG than KPG tested for the virus? Well from this one can possibly conclude that less number of KPG were actually tested. Hence, the results that researchers are getting are biased because of the "Improper Sampling" due to their inclination to test more MPG or due to whatever other reason.
If you go through answer choices. The choice C is aligned with the above pre-thinking and hence is CREDITED response here.
Provided OA (D) dose not seems to be credited response here because:
-- Infected KPG were very difficult to subdue for testing: Well this may be true, but this does not resolve the paradox because we can not conclude that "Difficulty in testing the infected animal for virus" would have any bearing on number of animals "Actually Tested"???? May be the virus was so fatal or critical that researchers were ready to take the pain to test the "Very Aggressive KPG" also.
We don't Know.
In my opninion choice (C) appears to be correct.
Looking for expert replies on this.
Please hit kudos, if you like explanation in any way, this is great motivation to write it down.