A) Cream pies B) Sliced bread C) Strudel D) Bagels
The answer is B) Sliced bread Only whole loaves were made available to the public during the war, but it was never explained why or how this benefited the war effort.
In what country? Assuming it was Germany I'd guess 'D' since bagels are a Jewish food.
In America, sorry.
I'll go with C..
I think C