Under the National Institute of Standards and Technology (NIST) impact definitions given in the material, which rating means severe or catastrophic effects?

### Why this is right The stated impact definitions assign severe or catastrophic effects to High. Moderate means serious effects, and Low means limited effects. ### The concept Impact describes the seriousness of consequences if a risk scenario occurs. It is different from likelihood, which concerns how probable the scenario is. The rating should reflect the effect on the information or organization, not how often an event is expected. ### The other options - **A. Low**: Low describes limited effects, not severe or catastrophic ones. - **B. Moderate**: Moderate describes serious effects, a lower impact category than the stated High definition. - **D. Very Low**: This is a likelihood label from the course material, not one of the stated impact definitions. ### Terms - **NIST**: National Institute of Standards and Technology, the organization whose impact definitions are referenced in the material. - **Impact**: The severity of effects if harm occurs. ### Remember High impact means severe or catastrophic effects.