The answer is C.
Although Mason initially supported constitutional reform, he ultimately refused to sign the Constitution, and he led the Anti-Federalist bloc in the Virginia convention (1788) called to consider ratification of the Constitution.
An outspoken Anti-Federalist, Henry opposed the ratification of the U.S. Constitution, which he felt put too much power in the hands of a national government. His influence helped create the Bill of Rights, which guaranteed personal freedoms and set limits on the government's power.