If you are a native American living in Arizona in the 1920s can you vote ?

You could not.

The Snyder Act of 1924 admitted Native Americans born in the U.S. to full U.S. citizenship. Though the Fifteenth Amendment, passed in 1870, granted all U.S. citizens the right to vote regardless of race, it wasn't until the Snyder Act that Native Americans could enjoy the rights granted by this amendment.

the answer is a. hope this