I have read the suggested link you and my conclusion is writting below. Thanks,for all your suggestions.

Question 2

During World War I the most striking break from pre-war conditions on the home front was
Answer
(A)the use of volunteer armies.
(B)central planning of the economy.
(C)censorship.
(D)anti-patriotic sentiment.
(E)conscription.

My answer E

Right. :-)