Final answer:
The appointment of Judge Hastie to the War Department and the promotion of General Benjamin O. Davis were considered empty measures by many African Americans because they were unable to change the military’s policies on segregation.
Step-by-step explanation:
The appointment of Judge Hastie to the War Department and the promotion of General Benjamin O. Davis were considered empty measures by many African Americans because neither figure was able to change the military’s policies on segregation (option B). Despite holding positions of authority, they were unable to dismantle the discriminatory practices within the military. African Americans had high hopes that the war would bring about social change and equality, but these appointments did not lead to the desired progress.