I really need help with this question..
4. Which of the following statements, about the period and poets of the Harlem Renaissance, is true?

A. It was a cultural movement, named after a New York City neighborhood, during the 1920s and 1930s

B. The Great Migration, and industrialization, played a role in drawing large numbers of African Americans to Northern Cities, prompting a greater sense of community

C. The roots of the renaissance were sparked by increased political discussions, and a rise in the availability of education for African Americans

D. All of the above