A new building is described as one that is:

The definition of a new building encompasses multiple stages of the building process, emphasizing the comprehensive nature of compliance with safety regulations. The correct answer reflects that a building is considered "new" if it has been designed, approved, or constructed after the relevant effective date of the code's adoption by the agency or jurisdiction.

This wording is significant because it recognizes that new buildings involve not just the physical construction but also the design and approval phases, which must adhere to current codes for safety and compliance. Each of these steps plays a crucial role in ensuring that the building meets the latest safety standards and guidelines set forth in the code, thus serving the primary purpose of protecting life safety.

This broader definition is crucial for ensuring that all aspects of building creation are within the jurisdiction's legal and safety framework. It also clarifies that changes or updates in building regulations must influence the entire process, from design through to final approval, ensuring that all new constructions are aligned with the most current safety codes.