World War I was really the first "total" war in the sense that practically no target was off limits for attack. The justification was that ships carrying goods to the enemy were just as dangerous in the long term as the weapons they were making.
A. 33% because 4026 divided by 1342 gives you 3 then you get 100 and divide it by 3 which gives you 33.3 or also known as 33%. You divide by 100 because it represents the 100 percentage