What is a Parliamentary Democracy? Who do citizens elect? Who is the head of a parliamentary democracy?

Parliamentary system, a democratic form of government in which the party (or a coalition of parties) with the greatest representation in the parliament (legislature) forms the government, its leader becoming prime minister or chancellor. Instead of participating in general elections, Parliament elects a Prime Minister. Citizens elect members of parliament. In addition, Parliament constitutes a legislative branch of government. The Prime Minister generally has no time limit during which they can remain in office. The head of government in a parliamentary system is most commonly known as the prime minister but is in some cases also called the premier.

Explanation:

Sorry its kinda long hope it helps :)

d. japan's attack on pearl harbor

a)the court decides which cases it will hear