The correct statement that is true of a parliamentary system of government but not of a presidential system is:
4. The head of the government is chosen by the legislative assembly.
In a parliamentary system, the head of government (usually called the Prime Minister) is typically elected by the members of the parliament (legislative assembly). This differs from a presidential system, where the president is usually elected independently of the legislature.
The other statements are either inaccurate or not exclusive to parliamentary systems:
- While parliamentary systems often have unwritten conventions, they typically still operate within a constitutional framework.
- The judicial branch is independent in both systems, although its structure and relation to other branches may differ.
- Both parliamentary and presidential systems have a legislative assembly determined by national elections, so this is not exclusive to parliamentary systems.