Answer:
A) Determine how many battles during World War II took place near small farming towns.
Step-by-step explanation:
In order to be able to determine wether the passage draw a valid conclusion a historian could look the geographical position of battles fought in WWII and determine how many of them affected rural farming towns, and after that see how many rural farming towns there are on the countries where WWII was fought and see if the proportion represents a significant number of rural towns affected.