Option D is the correct starting view for the requested correlation. Zscaler’s Performance Dashboard documentation describes both the Regions by ZDX Score map and the Page Fetch Time graph, which tracks how long an application page takes to load over the selected period. The application-details guidance also exposes impacted regions and their probe scores. Together, these views show whether the degradation is widespread, region-specific, or concentrated in a time window; related ISP incidents can then be examined. CloudPath is the next drill-down when path evidence is required, while device telemetry tests a particular endpoint hypothesis. Inventory data can reveal version distribution but does not measure the incident. ZDX Score and Page Fetch Time therefore provide the broad correlation needed to choose the correct network, endpoint, or application investigation.