Answer:
The Anti-Federalists wanted a Bill of Rights to protect the rights of the people.
B. problems could be solved using human reason.
Russia got the bomb
Spying was ramped on both sides.
There was an arms race and it was open, which was the main reason for Eisenhower warning against the Military Industrial complex. The military was just becoming far too powerful.
Your answer would be B.
Why? The others don't make sense.