A financial services company will launch a new web application in us-east-1 on EC2. The application must be highly available and autoscaling in us-east-1, and the company wants an active-passive disaster recovery environment in us-west-1. Which design meets these requirements?

The correct option establishes a highly available and autoscaling environment in us-east-1 with an ALB and Auto Scaling group across multiple AZs. It then replicates this entire setup in us-west-1 for disaster recovery. Route 53 with a failover routing policy and health checks correctly directs traffic to the primary region and automatically switches to the secondary region if the primary becomes unhealthy, fulfilling the active-passive DR requirement. The first incorrect option attempts to span an ALB and Auto Scaling group across peered VPCs in different regions, which is not supported for ALBs. The second incorrect option uses separate records with health checks but doesn't explicitly configure a failover routing policy, which is crucial for automatic active-passive DR. The fourth incorrect option also incorrectly tries to span an ALB and Auto Scaling group across peered VPCs in different regions and lacks a proper DR strategy.