Answer:
A prime minister is the head of the cabinet and the leader of the ministers in the executive branch of government, often in a parliamentary or semi-presidential system. Under those systems, a prime minister is not the head of state of their respective state nor a monarch; rather the prime minister is the head of government, serving typically under a monarch in a hybrid of aristocratic and democratic government forms or a president in a republican form of government.
Roles of the Prime Minister
the Prime Minister determines the general direction of Government's activities and ensures coordinated and purposeful work of the Cabinet of Ministers. The Prime Minister leads the work of the Cabinet of Ministers and is responsible before the Saeima.