The correct answer is:
At Bletchley Park, the ten thousand people on the staff figured out over six thousand codes, some of which were very important to the war effort.
This sentences summarizes perfectly the excerpt because it includes information about the amount of people that worked, where they worked and the importance some of the decoded messages had in determining the result of the war.
Answer:
B. At Bletchley Park, the ten thousand people on the staff figured out over six thousand codes, some of which were very important to the war effort.
Explanation:
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