The correct answer is A. Governor
Originally, the Governor appointed members however things got modernized a bit so the Governor still oversees their work but the members are chosen based on merit. There are now five members of the commission with may assistants regarding various problems and the Governor of the state of Georgia is their chief.
Article 5 describes the process of Amending the US Constitution. Specifically, it specifies that Amendments need to be ratified by three-forths of all states. This means that the central government cannot change the Constitution without the States's agreement, which is in line with the principle of Federalism.