Which option allows users to switch between roles that contain different commands in NX?

The Role Manager is the correct choice because it serves as a centralized tool within Siemens NX that enables users to manage and switch between different roles. These roles are essentially configurations that can include custom sets of commands, toolbars, and settings tailored for specific tasks or workflows within the software. By utilizing the Role Manager, users can easily adapt their interface and tools according to the specific requirements of their current project or activity, enhancing productivity and efficiency.

The other options, while useful in their own right, do not specifically facilitate the switching between roles. The Resource Bar provides access to frequently used resources and tools but does not inherently allow for managing role definitions. The Command Finder is a utility for locating commands, which does not encompass the broader functionality of managing and switching between roles. The Role Tab, while it might display current roles, typically does not offer the level of management and switching capabilities that the Role Manager does.