Which allows the creation of a task-based record from Service Catalog?

A Record Producer is a type of catalog item that enables users to create a record in any table (e.g., Incident, Change Request, custom table) from the Service Catalog. When a user submits a Record Producer, it directly creates a task-based record based on the configured mapping.

UI Builder is a tool for building user interfaces and pages, not for creating task-based records from the Service Catalog.

Assignment Rules are used to automatically assign tasks to users or groups, they do not create the task records themselves from the Service Catalog.

UI Actions are buttons, links, or context menu items that perform server-side or client-side operations, but they are not the primary mechanism for creating task-based records directly from a Service Catalog item submission.

Flow Designer is used for automating processes and orchestrating steps, but it is triggered after a record producer submission, or other events; it doesn't represent the catalog item itself that creates the record.