What does "immutable" mean?

The term "immutable" describes something that is unchanging over time or unable to be changed. In various contexts, such as in programming or legal discussions, immutability refers to the stability and permanence of an object, condition, or rule. For example, in computer science, an immutable object cannot be altered after it is created, thus ensuring consistency and reliability. This concept is crucial for maintaining integrity in systems where alterations could lead to errors or unexpected behaviors. The other options, which suggest changeability, flexibility, or frequent modifications, directly contradict the core meaning of "immutable."