After updating an instance template for a multi-zone managed instance group, you must deploy the fix immediately without impacting service. Which MIG setting should you change?

To deploy an update immediately without impacting service, you need to ensure new instances are created and ready before old ones are removed. Setting the Minimum Wait time to 0 seconds means there's no delay between when a new instance passes its health checks and when the update proceeds, effectively speeding up the rollout. Setting Max Surge to 100% would create new instances equal to the current group size, potentially doubling your instances during the update, which might be overkill for an immediate fix. Update mode to Opportunistic means updates only apply when instances are recreated for other reasons, not immediately. Maximum Unavailable to 100% would allow all instances to be unavailable simultaneously, causing a service impact.