Graham was an effective leader during his time because he was able to draw a fine line between freedom of religion and politics of the state. He was able to partner with Martin Luther King as a show of solidarity for civil right. Even as his popularity grew, he still have critics. He made his role clear as a spiritual, rather than having political role.
Http://www.usahistory.info/southern/Virginia.html
The answer is option A. Unitary
<span>Unitary Government is a type of government in which government power is centralized and it operates as one unit.
When the power is centralized in a government that type of government is called unitary system of government and when power is distributed among the central government and local government, then the system is federal system of government.</span>