I would say A, they were very resourceful. Hope this helps.
As the same themes apply to people living in very different times and places, therefore, It is useful for historians to base certain studies on the analytics of historical themes. The correct option is B.
<h3>
Who is called a historian?</h3>
The individuals who research and write approximately the beyond and for that, they do enormous studies from the quality sources available and draw conclusions from them are referred to as Historians.
To have the correct records about the past they need to do detailed research of the historic issues that may be carried out thru the assessment among the useful resource of the similar time frame and places.
The missing information in the question is as follows:
A. There are fewer historical themes than there are regions or periods.
B. The same themes apply to people living in very different times and
places.
C. All the cultures in a particular region respond to historical themes in the same way.
D. Experience has confirmed that analyzing themes is the most effective approach to history
Thus, The correct statement for the above question is Option B.
Learn more about historians:
brainly.com/question/24466312
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