Which action should be taken during a regional policy-tuning effort that requires evidence of egress-control...

Firewall Insights is the correct analytical source because the requirement concerns network-layer egress enforcement. Zscaler’s Firewall Insights columns reference includes the originating location and the network application associated with each session or aggregated session. Its filter reference allows administrators to narrow results by firewall or IPS action and other session attributes. The analyst can filter by region or location, matched rule and action, application, service, destination, and time range, then compare hit volume and transferred bytes before and after tuning. Data Discovery reports address sensitive-data exposure, not firewall enforcement. Administrator Audit Logs prove who changed configuration but do not measure traffic outcomes. Web Insights is appropriate for HTTP and HTTPS transactions, whereas the scenario explicitly requires network-layer application and firewall evidence. Firewall Insights therefore provides the required correlation.