Answer:
A). by showing an example of African American women working during wartime.
Step-by-step explanation:
The photograph functions to exemplify that African American women used to work during wartime. It allows the author to substantiate his claim and offer support for his text that primarily deals with the position of women during World War II and how the extreme war pressure 'led to the dropping of quotas' and gave African American women the authority to serve in different sectors. Therefore, the image serves to not only justify the claim but also to promote a better understanding and easy acceptance of the claim among the readers. Thus, option A is the correct answer.