What term describes something in a pure state; uncorrupted?

The term that best describes something in a pure state or uncorrupted is "pristine." This word conveys the idea of being untouched, unspoiled, or in its original condition. When we refer to something as pristine, we typically highlight its clarity, freshness, and purity, indicating that it has not been altered or damaged in any way. This term is often used in various contexts, such as nature, where one might describe a pristine environment that remains unaffected by human impact.

In contrast, the other options do not convey the same sense of purity or undisturbed state. "Provisional" refers to something temporary or conditional, lacking the permanence associated with being pristine. "Prudent" relates to being careful or wise in practical matters, which does not imply any notion of purity. "Quell" means to suppress or put an end to something, which is a process that would inherently corrupt or disrupt the original state of whatever is being discussed. Therefore, "pristine" is the most appropriate choice when describing something in its pure, uncorrupted form.