Answer:
B. served in segregated units in the military.
During World War II, African Americans served in the military, but they faced discrimination and segregation within the armed forces. The United States military was racially segregated, and African Americans were typically placed in separate units and had limited opportunities for advancement. They also had to deal with racial prejudice from white soldiers and officers.
Despite these challenges, many African American soldiers served with distinction and bravery, and their contributions helped to win the war. However, it was not until after the war that the United States military began to desegregate and provide equal opportunities for African American soldiers.