Final answer:
The version of Office suitable for a subscription-based licensing model with centralized management using Group Policy is Microsoft 365 Apps for enterprise.
Step-by-step explanation:
If your organization plans to deploy a subscription-based licensing model of Microsoft Office and must use group policy to enforce Office application settings, the version you should deploy is Microsoft 365 Apps for enterprise. This version of Office is designed for enterprise environments and allows for centralized management of Office applications, including the deployment and enforcement of settings via Group Policy.
Moreover, it aligns with a subscription-based model that continuously updates and offers the latest features and security, which can be beneficial for your enterprise.