womens suffrage in arizona was granted by which reform measure?\n an initiative\n a recall\n a referendum\n…

Brief Explanations:

In Arizona, women's suffrage was granted through an initiative. An initiative allows citizens to propose and vote on laws or constitutional amendments directly. A recall is for removing an elected official, a referendum is for voting on a measure already passed by a legislature, and a direct - primary is for nominating candidates.

Answer:

an initiative