When creating a user filter, which function is needed to display all values stored in a constant?

The correct function to display all values stored in a constant when creating a user filter is a!forEach(). This function is specifically designed to iterate over a list or a collection, which makes it ideal for scenarios where you want to apply actions or render values for each item within that list.

When using a!forEach(), it allows you to dynamically create a corresponding display for each element of the collection stored in the constant. This fits perfectly for user filters where you may want to present multiple selectable options to the user based on the values of a constant.

The other functions do not fulfill the same purpose. For instance, a!filter() is typically used to refine or reduce a dataset based on specified criteria rather than to display all values. Meanwhile, a!map() is utilized for transforming data by applying a function to each element in a list, which does not focus on displaying all values. Finally, a!textField() is meant for input fields where users can enter values, not for displaying a list of options to select from. Thus, a!forEach() stands out as the most appropriate choice for this use case.