The 1930s demonstrated that A. Keynes ideas had failed the test of history, with the rise of Hitler
B. Economic policies in Germany had nothing to do with the rise of Hitler
C. Hayeks ideas had been proved correct by history with the rise of Hitler
D. Hayeks idea had failed the test of history with the rise of Hitler

Either B. or C.

Go with your instincts.

Explanation: Hope this helps..

congress also has implied powers, which derive from the necessary and proper clause of the constitution and permit congress "to make all laws which shall be necessary and proper for carrying into execution the foregoing powers, and all other powers vested by this constitution in the government of the united states.