The correct answer is limited suffrage
In a dictatorship, there is limited suffrage in that the people may be allowed to vote at certain levels but not in the presidential elections. Even when they vote, there is electoral malpractice and rigging to ensure only the cronies of the dictator win
The Germans sank a British ship which had American passengers. This was the first step. After this due to the unrestricted submarine warfare more US ships were sunk by German U-boats.
Definitely not A or D. Both B and C could be applicable
The power of the Catholic Church was weakened