The correct answer is letter A) They elect members of the Parliament.
Argumentation:
Australia's Government rules by a federal parliamentary constitutional monarchy, which exercises its authority through a Constitution.
According to the constitutional structure, the Queen designates a General Governer for him to represent her (executive branch), and the General Governor appoints a Prime Minister (legislative branch) to represent the Parliament Representatives and Senate, and then there are the federal courts (judicial branch).
The Federal Parliament of Australia has two chambers: the Senate and the Representatives, which both are elected by the Australian citizens at federal elections.
The oceanic crust would sink below the continental crust.
Explanation:
The Oceanic Crust is thicker than continental crust. The Oceanic crust is made with volcanic rocks. As both having differences in the density when active continental crust meets oceanic crust in subduction zones, the oceanic crust is typically pushed back into the mantle.