Define "immutable."

"Immutable" refers to something that does not change or is unable to be changed over time. This term is often used in various contexts, such as in philosophy, law, and computer science, to denote principles, rules, or objects that are constant and steadfast. When something is described as immutable, it means that it remains the same regardless of external factors or influences, indicating a sense of permanence and stability.

The other choices reflect characteristics that are opposite to the meaning of "immutable." They suggest variability and change, which are not aligned with the concept of being unchanging. Thus, the understanding of "immutable" revolves around its core definition of being steadfast and unalterable.