Conclusion: The reports compiled at headquarters are not reliable.
Choice B must always be correct for this conclusion to hold true.
Historian: Though they may seem like an impeccable source, the reports that were compiled at general headquarters after a battle were not, it appears, always reliable. For example, in the battle I have been researching, memoirs written much later by a man who was a regimental colonel at the time show that the hill occupied by his regiment was actually misidentified in the battlefield report.
The historian's reasoning relies on which of the following assumptions about the battle he has been researching?
A) During the course of the battle, the regiment in question found itself occupying the wrong hill. -
This statement contradicts the conclusion and hence cannot be the right choice.B) The report that was compiled at general headquarters is more likely to be inaccurate than the former colonel's memoirs. -
This choice must be true for the conclusion to hold true. C) The battle was more complex than most other battles of its time. -
Whether the battle was more complex than others is not relevant to cast doubt on the reliability of the reports.D) There was a deliberate attempt to be deceptive on the part of those who compiled the battle report at general headquarters. -
Whether it was a deliberate attempt to be deceptive or not, the reports can still not be reliable. For a statement to be an assumption, the answer choice must always be true. In this case, choice D need not be always true.E) An accurate account of the battle could be constructed by comparing the headquarters report to memoirs written by participants. -
Irrelevant, whether an accurate account can be created by comparing report & memoirs is not necessary to support the conclusion that the reports are unreliable.