Step 1: Understanding the Concept:
The question asks to identify the main element of a state from a political science perspective. A state is defined by four essential elements.
Step 2: Detailed Explanation:
According to political theory, a state must possess four essential elements to be considered a state:
1. Population: There must be a human population.
2. Territory: There must be a definite geographical area.
3. Government: There must be a political organization to administer the state.
4. Sovereignty: The state must have supreme and independent authority over its territory. In the given options, 'Authority' is the closest term to sovereignty.
Since Population (A), Government (B), and Authority (representing Sovereignty) (C) are all essential elements of a state, they are all 'main' elements. Therefore, the most complete and correct answer is 'All of these'.
Step 3: Final Answer:
Population, Government, and Authority (Sovereignty) are all main elements of a state. Thus, 'All of these' is the correct choice.