What constitutional amendment established the process for direct democracy in Colorado?

The process for direct democracy in Colorado is established in Article V of the Colorado Constitution. This article outlines the procedures for ballot initiatives and referendums, allowing citizens to propose legislation or constitutional amendments directly or approve or reject laws passed by the legislature. This framework empowers voters to participate actively in the legislative process, reflecting the principles of direct democracy.

By including provisions for initiatives and referendums, Article V ensures that the electorate has the ability to influence state governance directly, which is central to the concept of participatory democracy. Other options either refer to different sections of the constitution or specific amendments that do not specifically address the entire process of direct democracy in Colorado.