Question

many african americans during world war i
could not find work at all.
could not move to find work.
found work in rural areas.
found work in northern cities.

Explanation:

During World War I, the Great Migration began, where hundreds of thousands of African Americans moved from the rural South to northern industrial cities to take up factory jobs left open by white workers who had been drafted into the military. This matches the correct option, while the other choices are incorrect: many did find work, they could move for work, and they primarily moved away from rural areas to urban northern centers.

Answer:

D. found work in northern cities.