Giving final importance to people's vote in democracy is based on which core idea?

Correct answer: People are the source of legitimacy of rule

The direct answer is Option A: people are the source of legitimacy of rule. Legitimacy means that citizens accept a government as having the right to govern. In a democracy, this right comes from the consent of the people, expressed through voting and other forms of participation. Reasoning step by step: citizens choose representatives; representatives receive authority from that choice; therefore government authority is justified by the people’s consent. Option A is correct because it directly links the people’s vote with democratic legitimacy. Option B is wrong because an army may protect a country but military power alone does not give democratic legitimacy. Option C is wrong because hereditary power comes from family succession, not public consent. Option D is wrong because wealth cannot give citizens equal political authority. Memory cue: democracy means rule with the people’s consent.