Final answer:
The 'Great Migration: Life for Migrants in the City' section helps explain that although African Americans encountered many challenges in the North, the gains in education and personal freedom were significant. It shows the psychological and social developments that stemmed from the Great Migration, reflecting the complexities of this historical period.
Step-by-step explanation:
The section 'Great Migration: Life for Migrants in the City' contributes to the development of ideas in the passage by explaining that, while African Americans who moved north during the Great Migration faced continued economic challenges, they gained greater educational opportunities and personal freedoms. This is best represented by choice A: It explains that life for Blacks in the North still had many challenges. The hardships in the South, including Jim Crow laws and limited job availability, drove African Americans to move to the North in hope of better opportunities. Even though they encountered discrimination and segregation in Northern cities, they were nonetheless treated more humanely and had access to the benefits of urban life, such as better education and a chance to participate politically. Importantly, the ability to move, work, and live with a higher degree of personal freedom provided significant psychological gains, despite the economic difficulties.
Examples of cities where African Americans sought new lives include Chicago, Detroit, and New York. The movement also led to the politically and culturally significant Harlem Renaissance. This massive demographic shift not only altered the social landscape of American cities but also increased African Americans' political activism and cultural expression.