Which statement about lists in Mendix is true?

The statement that a list can originate from a retrieve action or the creation of a new list is accurate because, in Mendix, lists can be populated through different means. Specifically, lists are often generated as a result of a retrieve action from a database or via the creation of new entries within the application itself. When you retrieve data, for instance from an entity in the database, it generates a list of objects that meet your query criteria. Alternatively, you can create a new list programmatically by instantiating objects and adding them to that list. This flexibility allows developers to build dynamic and data-driven applications.

The other statements do not reflect the underlying capabilities of lists in Mendix. A list can indeed have more than one origin even though some lists may be created in a single specific way in different scenarios. Lists are not restricted to being created solely through user input, as they can also be generated by automated processes or system actions. Furthermore, lists in Mendix can consist of objects from different modules, allowing for a diverse and integrated approach to data handling across an application.