Final answer:
The framers included the Tenth Amendment in the Bill of Rights to ensure that the Constitution would be ratified, to affirm that powers not granted to the federal government were reserved to the states, and to respect state sovereignty in the federal system. (option A & C)
Step-by-step explanation:
The framers of the Constitution felt it necessary to include the Tenth Amendment in the Bill of Rights for several reasons:
A: There was concern that the Constitution might not be ratified by the states unless it explicitly clarified the rights reserved for the states, based on historical experiences with central authority.
C: The Tenth Amendment was needed to clearly state that all authority not given to the federal government, nor denied to the states, resided with the individual states, ensuring the protection of their sovereignty.
The framers recognized the importance of the states and wanted to protect their autonomy within the new federal system, as well as afford them the power to influence Constitutional amendments.
Option B is not accurate since the states did not vote to add this amendment; rather, it was proposed by the first Congress. Option D falsely suggests that the Tenth Amendment was to guarantee states a share of federal tax revenue, which it was not purposed to do.