A suppression rule in Azure Security Center (Defender for Cloud) prevents specific alerts from appearing in the portal or triggering notifications. When a suppression rule is active, alerts that match its conditions are hidden from view, even though they still occur in the background.
If you need to temporarily view alerts from the suppressed virtual machines - for example, while troubleshooting or verifying detections - you can disable the suppression rule. Microsoft documentation states: "To temporarily resume visibility of alerts suppressed by a rule, change the rule state to Disabled.
When disabled, the rule no longer hides alerts that meet its conditions." Changing the expiration date (Option A) only controls when the rule automatically stops; it does not immediately restore visibility.
Modifying filters (Option C) won't reveal suppressed alerts, as those are already hidden from query results.
Viewing Windows event logs (Option D) provides raw OS data but not Security Center alert context.
Thus, to see the suppressed alerts for the last five days, you must disable the suppression rule, making B the correct answer.