Which option expands NIMS?

• A. National Incident Management System
• B. National Incident Management Standards
• C. National Interagency Management System
• D. National Incident Management Structure

Answer: (D)

NIMS naming indicates a nationwide framework for coordinating incident management across multiple agencies. The phraseNational Incident Management System is the official expansion, and it reflects a cohesive set of principles, processes, and structures that guide how incidents are managed from response through recovery.

The other options don’t fit because they alter a key word in the acronym. Standards implies a focus on written requirements rather than an integrated framework; Interagency Management System changes the scope to interagency coordination in a way that isn’t the established name; and Structure suggests a physical or organizational layout rather than the comprehensive system used for incident management. By design, NIMS refers to a System, not Standards, Interagency System, or Structure, which is why National Incident Management System is the correct expansion.