"a system of government by the whole population or all the eligible members of a state, typically through elected representatives." Is a definition for which form of government?

"a system of government in which priests rule in the name of God or a god." Is a definition for which form of government?

"an authoritarian form of government, characterised by a single leader or group" Is a definition for which form of government?

"a form of government with a monarch at the head." Is a definition for which form of government?

Which of the following countries is NOT a theocracy?