The correct answer is "voters".
Since the introduction of the modern concept of Democracy with the French Revolution and subsequent establishment of the Republic of France, a series of institutions and sets of rules were created in order to implement an adequate system of checks and balances between the powers of the government but also the people. In other words, a system that would prevent any of the parts to exercise more power over the others, bringing an imbalance of power. The recall, referendum, and initiative are political instruments granted by the Constitution to the citizens of a democratic country in order for them to take decisions regarding key affairs in the management of the nation.