One consequence of the migration of the middle-class to the suburbs after World War II was C. Poverty became an invisible problem because many Americans never encountered it.
America's suburbs were residential centers that developed after the Great Depression and the Second World War. These settlements attracted the middle-class with inexpensive housing. Most of the middle-class families responded to the development of suburbs because of racial fears and unaffordable housing in the cities.
Thus, the main consequence of the middle-class migration to the suburbs after World War II was Option C.
Learn more about the middle-class migration to the suburbs at https://brainly.com/question/973653