The correct response is:
Many supporters of the Constitution claimed that a national bill of rights was not necessary.
At the time of the Constitution's ratification, several framers and supporters argued that a bill of rights was unnecessary because the Constitution itself limited the powers of the federal government and did not grant it the authority to infringe on individual liberties. However, this viewpoint led to significant debate, and the lack of a bill of rights was a key concern for many Anti-Federalists, ultimately leading to the adoption of the Bill of Rights in 1791.