Which of the following describes a value group property?

A value group property is defined as an unordered collection of non-unique values. This means that within a value group, multiple entries can exist with the same value, and there is no specific sequence in which these values are arranged. This characteristic is particularly useful when the requirement is to capture multiple instances of similar data without the need for uniqueness, such as in scenarios where one might want to collect all types of responses or preferences from a user, regardless of whether they are the same.

The other options involve characteristics that do not align with the nature of a value group property. An ordered list indicates a structure that requires a specific sequence, which is not applicable to a value group. A list of text items that can be ordered suggests a level of control over how the items are displayed, which again does not match the unordered nature of value groups. Lastly, the notion of a single unique value directly contradicts the defining feature of a value group, which allows for multiple occurrences of the same value. Understanding these distinctions can help clarify how to appropriately use and implement properties within Pega applications.