Which option accurately defines the relationship between a workgroup and a domain?

The relationship between a workgroup and a domain is best defined by the fact that all computers in a workgroup can share resources without centralized control. In a workgroup, each computer operates independently and there is no server that manages security or access. This decentralized structure allows users to share files and resources among themselves directly, but it can lead to less administrative oversight and control.

On the contrary, domains involve a centralized authentication system, meaning that a server (typically a domain controller) manages user accounts and permissions. This central administration enhances security and simplifies management, especially in larger networks. The other options fail because they mischaracterize elements related to the nature of workgroups and domains, such as the assertion that workgroups provide centralized user management or that they are impacted by internet connectivity in a specific way.