A cloud administrator needs to configure multiple web servers to participate actively in workload processing. Which of the following will BEST help the administrator achieve this goal?

Autoscaling dynamically adds or removes servers based on demand but does not distribute traffic across existing servers to make them all actively process requests at the same time.

Deploying an availability group creates a pool of web servers, and enabling load balancing distributes client requests across all members of that group. This ensures every server actively handles traffic rather than sitting idle as a standby, directly meeting the goal of multiple servers simultaneously participating in workload processing.

A reverse proxy forwards requests to a backend server but does not inherently distribute load across multiple servers to ensure all of them actively participate in workload processing.

An HA group provides failover so traffic shifts to surviving members when one fails, but it does not distribute workload across all members simultaneously for active participation.