What does the "Copy" relationship denote among requirements?

The "Copy" relationship among requirements is primarily utilized to indicate that existing requirements are being replicated across different models. This relationship helps to maintain consistency and ensures that any updates made to the original requirement can be easily propagated to its duplicates, thus supporting traceability and coherence in requirements across various contexts or projects.

In practice, this means that when a requirement is copied, it is not merely duplicated in a superficial sense; instead, it retains a link back to the original requirement. This linkage allows stakeholders to understand where the requirements originated and ensures that they are referencing the same fundamental idea or condition, which is crucial for project integrity and clarity.

While the other options address different aspects of requirements management, they do not accurately describe the purpose of the "Copy" relationship. Replicating requirements for purposes other than maintaining consistent models, creating new requirements from templates, validating compliance, or adding redundancy for backup do not encapsulate the core function of what a "Copy" relationship implies in modeling practices.