The governor cannot ____ a referendum or initiative measure passed by the people.

The correct answer highlights a fundamental aspect of the democratic process at the state level in Arizona. When a referendum or initiative measure is passed by the people, it reflects the direct will of the electorate. The governor does not hold the authority to veto such measures because they are a result of a direct vote from the citizens. This is in contrast to legislation passed by the state legislature, which can be vetoed by the governor.

In this context, the power of the people to enact laws or policies through referendums and initiatives is an essential part of participatory democracy. By ensuring that the governor cannot veto these measures, Arizona’s constitution protects the expression of public opinion and maintains the integrity of the democratic process. This serves to empower citizens and reinforces their role in shaping state law directly, without interference from the executive branch.