Which statement best summarizes the relationship between the fede government and state governments? a. state governments must obey the federal government's orders unless they violate their state constitutions. b. state governments' powers are listed in the constitution, and all other powers belong to the federal government c. the federal government sets tax policy within the states, but the states determine how tax money is spent d. the federal government has authority over the states, but the states have a great deal of political independence.