What is a distinguishing factor of a Number Set compared to a regular Number field?

A Number Set is characterized by having a limited number of possible values that can be selected. This distinguishes it from a regular Number field, which allows for a broader range of values, including continuous data. In a Number Set, the values are typically predefined, meaning respondents can only select from a specified list rather than input any number. This can be particularly useful for scenarios where only specific responses are acceptable, such as rating scales or categories.

In contrast, options that refer to continuous data or decimal inputs do not accurately describe the nature of a Number Set, as it is typically not designed to handle unlimited variations in input. Additionally, a Number Set does not pertain to text variables, which are entirely different from numeric data management. These characteristics clarify why the correct answer focuses on the limitation of possible values.