CBRN sampling results are primarily used to _____ or _____ that an attack or outbreak had occurred.

The correct choice is anchored in the role of CBRN sampling results, which serve as critical evidence in assessing the occurrence of an attack or outbreak. In CBRN operations, confirming or denying whether an exposure or an incident has taken place is vital for decision-making, resource allocation, and response planning.

When CBRN sampling is conducted, the ensuing results provide essential data that can validate or refute suspicions of contamination or attacks. For instance, if samples collected from a site show the presence of hazardous agents, it confirms that an incident has likely occurred. Conversely, the absence of such agents can help deny the occurrence of an attack, effectively guiding appropriate responses from command authorities.

The other options do not encapsulate the primary use of the sampling results as clearly as this choice does. Identifying and analyzing may occur as part of the broader process, but they do not specifically capture the confirmation/denial focus. Simulating and predicting are more about forecasting potential incidents than assessing completed ones, while reporting and documenting refer to documentation practices rather than the specific outcomes of sampling that directly relate to confirming or denying an event.