In OutSystems, what is the function of "Data Actions"?

The correct choice highlights that "Data Actions" in OutSystems are designed specifically to retrieve or manipulate data within the application framework. These actions provide developers with the capability to perform operations on data, such as fetching data from a database, updating records, or even performing complex queries. This is fundamentally important in mobile applications where data management is a core aspect of user functionality and experience.

Data Actions enable seamless integration with the application's data model while ensuring that the necessary data handling is encapsulated in reusable processes. By utilizing Data Actions, developers can ensure that their applications work efficiently with data, allowing for greater flexibility and responsiveness in the mobile user interface.

The other options, while related to application development, do not accurately describe the primary purpose of Data Actions. For instance, validating user input, creating user interfaces, or deploying applications pertains to different aspects of mobile app development and does not capture the essence of data manipulation that is central to what Data Actions provide in OutSystems.