A solutions architect is tasked with enhancing the resilience of an application prior to its launch. The application is hosted on an Amazon EC2 instance within a private subnet of a VPC. This EC2 instance is managed by an Auto Scaling group with a minimum and maximum capacity set to 1. The application's data is stored on an Amazon RDS for MySQL database instance. The VPC is equipped with subnets across three Availability Zones and utilizes a single NAT gateway. The solutions architect must propose a solution to ensure the application's operation across multiple Availability Zones. What is the most appropriate solution to achieve this? | AWS Certified Solutions Architect - Professional Quiz