Answer:
C. a member of the legislature
Explanation:
In the Parliamentary system there is a Head of State and a Head of Government. The Head of the State is considered the leader of the nation and tends to be a ceremonial role. In countries wih monarchies the Head of the State is the Monarch and in the other countries, a President is elected. The Head of the Government is the Prime Minister and is the head of the legislature. Because of these, the answer is that under a Parliamentary system, government power is derived from the legislature, with the head of government being a member of the legislature.
