A parliamentary system functions through a fusion of powers between the executive and legislative branches, where the executive derives its legitimacy from and is accountable to the legislature. Key functions include forming a government led by a prime minister, proposing legislation, and overseeing its implementation. Additionally, parliament plays a crucial role in scrutinizing the executive through debates and votes of no confidence. This system facilitates cooperative governance by promoting dialogue and political stability while allowing for rapid legislative action. Ultimately, the parliamentary system supports a dynamic interaction between elected representatives and the government.