by ManhattanPrepLSAT1 Mon Sep 06, 2010 3:38 am
Happy to help.
The critic's argument is horrible. The critic tries to argue by means of analogy comparing the nations of Poran and Nayal to today. The critic says that there are statutes on the books regulating activities that no longer occur. Okay, sure that might be true. But the historian provided evidence that the statutes weren't just on the books, so to speak, but were enacted during the period in question.
So the critic failed to distinguish between a statute's existence on the books, and it's enactment during the time period in question - best expressed in answer choice (D).
(A) addresses the wrong conclusion. If the critic had claimed that there was definitely trade between the nations of Poran and Nayal then this would have a been a better answer choice. The fact that the information is consistent with the idea that there was no trade doesn't express a weakness in the critic's argument.
(B) is irrelevant. The argument does not need to establish that the laws were relevant to the timber trade. The critic argues by analogy, not by direct evidence.
(C) is not true. The critic does not fail to recognize the fact that the historian uses indirect evidence.
(E) does not reflect a flaw in the critic's argument. This answer choice is just meant to be tempting and make you pause long enough to think about what that assumption might be. But there is no problem with accepting the assumption of the historian that if a nation has laws on the books regulating an activity, that the activity probably occurred in reality.
I hope this helps, and if you have any further questions on this one, please feel free to ask!