What type of parameter passes a value into its parent's scope from the outside scope?

The correct answer is "Input." Input parameters are specifically designed to allow data to be passed into a function, action, or module from an external scope. This means that when you invoke a function or an action, you can provide values that the called function can use within its own context.

In the OutSystems development environment, an Input parameter enables the integration of external values, making your modules flexible and reusable because they can operate on different data inputs based on wherever they are called from. This is particularly important for creating dynamic applications that need to handle varying user data or application states.

Understanding how Input parameters work is crucial for structuring your applications logically, as they define the interface through which data is communicated into a given function’s internal workings. This capability promotes modularity and encapsulation, as functions can be designed to perform their tasks based solely on the inputs they receive, without reliance on external variables.