What architecture pattern ensures a global application remains available if an entire Azure region becomes unavailable?

Geo-redundant deployment is the correct answer because it involves deploying an application across multiple Azure regions. If one entire region experiences an outage, the application can fail over to another region, ensuring continued availability. Availability Sets protect against planned and unplanned maintenance events within a single data center, not an entire region. A Load Balancer distributes traffic across multiple virtual machines within a region or across zones, but doesn't provide disaster recovery if the entire region fails. Intra-zone scaling refers to scaling resources within a single availability zone, offering no protection against a regional outage.