Final answer:
The Self-Service application is available to all users and is meant to provide individuals with the ability to perform tasks, request services or information autonomously, in contrast to specialized applications that might be restricted to certain roles.
Step-by-step explanation:
The application that is available to all users among the options listed is typically d. Self-Service. Self-Service applications are designed to be accessed by anyone with permission to the system, allowing them to perform a variety of tasks such as requesting services, reporting issues, or accessing information. In contrast, applications like Change, Incident, and Facilities are generally more specialized and may be restricted to users with specific roles within an organization, such as IT staff or facilities management personnel. The Self-Service module is meant for a broader audience and thus made available to all users to promote efficiency and user autonomy.