You want to ensure that instances in your Managed Instance Group are evenly distributed across multiple zones in the same region for high availability. What should you configure?

Multi-zone MIGs are designed to distribute instances across multiple zones within a region, providing high availability and resilience against zonal outages. If one zone experiences an issue, instances in other zones continue to serve traffic. MIGs with anti-affinity policies are for placing instances on different physical servers within a zone, not across zones. Cloud VPN is for secure network connectivity, not instance distribution. Single-zone MIGs with custom scripts would be a manual and less reliable approach compared to the built-in multi-zone functionality. Cloud CDN is for caching content closer to users, not for distributing backend instances across zones.