I believe it is D because the allies weren't formed yet before war broke out but when it did, that's when the allies were formed.
Answer: I believe the answer is D. To demonstrate that soldiers and workers were equally important.
Explanation: below the text reads 'laborer and combatter' which would be referring to the soldier and worker. Both of them are shown with equal stances and are shaking hands.
You should revise a prediction when you learn more about the characters and the plot
