One feature of a Unitary State is
the large size of the country
high level of economic development
absence of constitutional division of power to the units
presence of heterogeneous groups
Correct answer is C
In a unitary system, all powers are centralized in the hands of the central government and that centre is the reservoir of all state powers. In this system, there are no provincial governments and the constitution empowers the central government to legislate, execute and adjudicate with full might.
Simply put, the central government is supreme and autonomous in a unitary government. It does not share its power with the component units