In the U.S. federal system, power is shared between the national government and state governments, and the distribution of powers can evolve over time based on legal interpretations, political dynamics, and societal changes. Option D reflects the dynamic and flexible nature of federalism in the United States.
U.S. federalism embodies a dynamic power-sharing arrangement where authority is divided between the national and state governments, and this distribution evolves over time. Contrary to Option A, state governments are not inherently weak but have distinct roles.
Option B is incorrect, as the U.S. Constitution establishes the supremacy of federal law. Option C oversimplifies the complex interplay between national and state policies.
The essence of U.S. federalism lies in its adaptive nature, allowing power dynamics to adjust based on legal interpretations, societal changes, and political developments, ensuring a responsive governance structure that accommodates the evolving needs of the nation.