What classification of crime in Arizona requires imprisonment?

A felony is classified as a more serious crime and, in Arizona, it typically carries the potential for imprisonment. This classification includes offenses such as murder, robbery, and major drug offenses. Felonies can lead to significant prison time and in some instances, life sentences or even the death penalty, depending on the severity of the crime.

In contrast, misdemeanors are less severe and may result in shorter jail sentences, fines, or community service, but they do not usually involve imprisonment in a state prison. Infractions are minor violations, often subject to fines or warnings rather than any form of incarceration. Similarly, violations are administrative offenses that usually lead to penalties such as fines rather than imprisonment.

Thus, the nature of felonies in Arizona specifically requires imprisonment, making it the correct classification regarding the question.