Concept:A state is a politically organized group of people living in a fixed territory under a common law and government.
Explanation:The description in the question matches the standard definition of a state.
A state has four essential elements: population, territory, government, and sovereignty.
The phrase "under a common law" refers to the government and legal system, while "definite territory" refers to its physical borders.
A community does not require a formal government or definite territory.
A nation is a group of people bound by culture, history, or language, not necessarily by law and territory.
A nation-state is a specific form of state, but the general term for the definition given is "state".
Answer:D. State