Why does Australia not possess a complete separation of powers?

The presence of overlapping governmental roles in Australia highlights the lack of complete separation of powers. The separation of powers is a fundamental principle that divides the responsibilities of government into distinct branches: the legislative (making laws), the executive (enforcing laws), and the judiciary (interpreting laws).

In Australia's system, certain members of the legislative branch, specifically the Parliament, also take on roles in the executive branch. For example, ministers and the Prime Minister are typically drawn from the members of Parliament. This overlap can lead to a blending of powers, as those who create laws are also responsible for implementing and administering them. Such a structure emphasizes the interdependence of the branches rather than maintaining them as entirely separate entities.

The other options do not illustrate this principle accurately. The concept of electing judicial appointments or appointing judges by the people does not pertain to the structural overlap of powers, and the assertion that the government is entirely managed by Parliament misrepresents the roles that exist within the executive and judiciary. Thus, the assertion about overlapping governmental roles accurately reflects a core reason for the incomplete separation of powers in Australia.