Democracy is a government by conciliation.

Answer: Option C

Conciliation : the action of stopping someone being angry; placation.
Non-cooperation : failure or refusal to cooperate, especially as a form of protest.
Dispute : a disagreement or argument.
Confrontation : a hostile or argumentative situation or meeting between opposing parties.
Irritation : the state of feeling annoyed, impatient, or slightly angry.

Antonym of Conciliation is Confrontation