Michigan Governor John Engler Is Pursuing Changes in Welfare Policy

Michigan governor John Engler is pursuing changes in welfare policy that are pleasing the Clinton administration more than his Republican allies on Capitol Hill. The Democrats' unlikely and somewhat unwilling hero announced an ambitious pilot project . . . that seeks to cut welfare costs by providing generous social services so that poor people can go to work. Democrats call his plan enlightened. Republicans have been caught off guard. Senator Daniel Patrick Moynihan, Democrat of New York, . . . praised Mr. Engler for breaking with congressional Republicans by using child care and transportation subsidies and fashioning a more active role for social workers in an effort to turn welfare recipients into workers. - The New York Times, January 22, 1996
In what way does the article show one of the strengths of federalism?

A) People will receive the same level of income support no matter where they live.
B) States may serve as sites for experimentation with new public policies.
C) The national government can force other states to follow Governor Engler's lead.
D) The federal government may prevent Michigan from treating its citizens unfairly.