Answer: A. To show that African Americans faced segregation even while fighting for their country alongside Americans of other races.
Step-by-step explanation:
Hughes uses the idea of the treatment he gets while he has his uniform, meaning while he's fighting in the war, and when the time comes to take it off, meaning when the war ends. He wonders whether the segregation black Americans have suffered before and even during the war would stop afterward, considering that black Americans fought alongside the white soldiers. He´s worried that segregation might continue despite their efforts.