Concept:Acceptance of a government by the governed is called legitimacy.
Explanation:Legitimacy refers to the right and acceptance of an authority, such as a government.
When the people willingly accept the government's right to rule, that government enjoys legitimacy.
Sovereignty means supreme power, while democracy is a system of government.
Authority is the power to give orders, but acceptance gives it legitimacy.
Thus, the correct option is legitimacy.
Answer:A. legitimacy