Answer:
b. Head of the government stays in office as long as he/she has majority support in legislature
Explanation:
A parliamentary system is an arrangement of of democratic governance where the official gets its popularity based authenticity from its capacity to command the confidence of the legislature, regularly a parliament, and is likewise considered responsible to that parliament.
In a parliamentary system, the head of state is typically a different person from the head of government. This is as opposed to a presidential system, where the head of state frequently is additionally the head of government and, in particular, the official does not get its democratic legitimacy from the legislature.