What does it mean when a prompt template version is described as immutable?

When a prompt template version is immutable, it means that once the version is activated, it cannot be edited or modified. This ensures consistency in production environments where changes could disrupt workflows.

Option A is incorrect: Any version (not just the latest) can be activated, depending on the use case.

Option D is incorrect: Modifications require manually creating a new version; automatic versioning is not enforced.

Option C is correct: Activation locks the version, enforcing immutability.