Answer:
A. Parliamentary Democracy
Explanation:
One characteristic of parliamentary Democracy is that the head of the country is usually different that the head of the government. The head of the country serve as a symbolic figure while the head of the government actually the one that manage the country.
In this form of democracy, all legislative process is handled by a body called a parliament. The citizens could vote to elect these parliament members, but the elect the prime minister is resided by this parliament, not the citizens. United States is an example of a nation that implemented parliamentary democracy as its form of government.