What represents a collection of elements of the same data type?

The correct choice identifies a collection of elements of the same data type as a List. In OutSystems, a List is a dynamic collection of items where each item is of the same type. This allows for flexibility in storing and manipulating multiple items without being constrained by a fixed size, which is essential for scenarios where the number of items can change during runtime.

A List can contain elements such as integers, strings, or any other data type, making it versatile for situations where you need to work with groups of related data. The ability to dynamically add or remove elements makes Lists particularly powerful in application development, allowing developers to handle collections of varying lengths easily.

In contrast, other types of data structures serve different purposes. While Structures are used to define a composite data type that can hold multiple fields of different types, Arrays, although they can also represent collections of the same data type, have a fixed size once created, limiting flexibility. Dictionaries, on the other hand, are collections that hold key-value pairs and can contain elements of different data types, emphasizing a different use case compared to a List. Understanding these distinctions is important for properly choosing the right data structure based on your needs in application development.