Which of the following solutions minimizes the attack surface for Azure App Service web apps deployed in the West Europe region?

The selection of Azure Traffic Manager and application security groups is appropriate for minimizing the attack surface of Azure App Service web apps deployed in a specific region like West Europe.

Azure Traffic Manager helps to direct user traffic to the nearest endpoint, which enhances performance and reliability. By using Traffic Manager, you can also implement security measures to filter and control incoming traffic, thereby reducing vulnerabilities exposed to potential attackers.

Application security groups allow you to define network security policies based on the application instead of the virtual machine or infrastructure, providing a more granular level of control over the network traffic. This segmentation helps in limiting access to only those networks or subnets that require it, significantly reducing the attack surface.

By combining these two solutions, you effectively create a strategy that not only optimizes traffic flow but also enhances security, ensuring that only legitimate user traffic is allowed while reducing exposure to potential threats.

In contrast, options like Azure Firewall and Virtual Networks focus primarily on perimeter security, while Web Application Firewalls and Load Balancers are more about protecting web applications from common threats and ensuring availability. Network Security Groups and VPN Gateways are important for managing access control and secure connectivity, but they do not specifically focus on minimizing the attack surface in the same integrated manner as the correct choice.