The process that allows citizens to approve or reject a law passed by a state legislature is called a(n) initiative, recall, or referendum .
The precess is called a referendum.
The referendum is a democratic instrument provided for in the Constitution that acts as a form of popular consultation on a subject of great relevance, in which the people manifest themselves on a law after it is constituted. In this way, the citizen only ratifies or rejects what is submitted to him.