Which of the following best describes a mandatory sentence?

A mandatory sentence is one that is established by law, specifically through statutory provisions, and does not allow for judicial discretion in its application. This means that once a judge determines that a mandatory sentence applies, they are required to impose the sentence as dictated by the law without the ability to change it based on the circumstances of the case or any mitigating factors.

This strict framework is designed to ensure consistency and uniformity in sentencing for particular offenses, reflecting the legislative intent to impose harsher penalties for certain crimes. Often, mandatory sentences are applied to serious or repeat offenses to deter criminal behavior and ensure public safety.

The other options do not accurately describe mandatory sentences. For instance, the idea of a judge altering a sentence based on circumstances contradicts the very principle of a mandatory sentence. Similarly, the concept of specifying a range of time goes against the nature of mandatory sentences that typically prescribe fixed durations. Finally, while many mandatory sentences may apply to violent crimes, they are not limited to this category alone and can also include drug offenses and other serious crimes.