Which two sentences describe the central idea of the passage?

The Great Migration helped to make Harlem Renaissance possible

Explanation:... But this Renaissance would never have occurred if the great Migration from the rural South to the urban North had not taken place.

either online or traditional classroom can work for students. which is better will depend on students and teacher. students may have trouble following a lesson in classroom while they can study at their own pace online. other students may have trouble staying focus on their own in online classes. teachers are more used to classroom teaching but they may also be more worry about their jobs teaching online classes and work harder.