A non-permanent feature of a state is
society
population
territory
government
Correct answer is D
Government is a non-permanent feature of a state.
It should be noted that Periodic Change is one of the major characteristics of government. No government is permanent especially, one that is based on peoples participation - elective government. That is the adoption of periodic free and fair elections. In some cases, it could be either four or five years to change a government.