The Japanese Parliament is officially known as the National Diet of Japan.
It is Japan’s bicameral legislature, composed of two houses:
- The House of Representatives (Lower House)
- The House of Councillors (Upper House)
The term "Diet" is derived from the Latin word *“dietas”*, which means a formal deliberative assembly.
Japan adopted this term from European parliamentary systems during the modernization of its political system in the Meiji Era (late 19th century).
Let us now evaluate the options:
- (A) Congress — This term is primarily used in the United States for its bicameral legislature (House and Senate). Not applicable to Japan.
- (B) Senate — A common term used for upper houses in many countries, like the U.S. or Italy. Not used for the Japanese Parliament.
- (C) Diet — ✔️ This is the correct and official term used for Japan’s legislature.
- (D) Majlis — This term is used in countries like Iran and some Arab nations. It is not related to Japan.
Hence, the correct answer is option (C): Diet.