Just wanted to go through my thought process when working through this question
Argument Core:
P: Three archaeologists from other universities will be given full access to documents that the report in question is based
C: Will be able to determine whether or not the report is accurate
Flaw: Assumes that the documents themselves are accurate
Answer Choices:
A) Irrelevant because it mentions objects that have been in the collection for many years and we only care about sales and acquisitions this year.
B) This is out of scope. The size or quality has no bearing on the conclusion
C) Also out of scope. Irrelevant whether or not the collection is on display or available to researchers. We care about items purchased this past year, not how they are displayed.
D) This answer choice looks good! It mentions that the possibility is ignored that the documents themselves are omitting information on sales and acquisitions during the past year. So the documents themselves are not accurate in the sense that they are not all encompassing, which would be necessary in order to determine the accuracy of the report
E) Also out of scope. What occurs after is irrelevant, we only care about the accuracy of the report.