Concept:In a cabinet system, the executive branch is led by a group of senior ministers, not by the legislature or judiciary.
Explanation:The cabinet is also called the council of ministers.
It is headed by the Prime Minister or Head of Government.
The council of ministers exercises executive power.
It implements laws and runs government departments.
The legislature makes laws, while the judiciary interprets them.
So, executive power is not vested in the legislature, judiciary, or civil service.
Answer:D. council of ministers