What is reserved to the States or the people according to the Tenth Amendment?

The Tenth Amendment to the United States Constitution states that powers not delegated to the federal government by the Constitution, nor prohibited to the States, are reserved to the States or to the people. This means that any authority not explicitly given to the federal government is inherently granted to individual states and their citizens. This principle is crucial in maintaining the balance of power between federal and state governments, ensuring that states can exercise their own rights and govern themselves in areas not expressly covered by federal law or the Constitution.

The context of the other options helps clarify why they do not represent the idea expressed in the Tenth Amendment. The powers delegated to the federal government refer to the authorities that the Constitution explicitly grants to it, which is the opposite of what the Tenth Amendment addresses. Prohibited powers relate to those specifically restricted by the Constitution and do not align with the idea of reserved powers. Lastly, powers granted exclusively to the Supreme Court would pertain only to judicial authority and do not encompass the broader context of governance and rights reserved to the states or the people as outlined in the Tenth Amendment.