Which of the following is a key indicator of a discrete variable?

A discrete variable is characterized by its ability to take on only a finite number of distinct values. This means that the variable can be counted and typically measures items such as the number of properties, the number of people, or the number of sales, where values are indivisible. In other words, discrete variables are often whole numbers.

The key aspect of a discrete variable is that its values can be listed out completely, as opposed to a continuous variable, which can take on any value within a given range, including fractions and decimals. Therefore, stating that a discrete variable can only take on a finite number of values correctly identifies a fundamental property of discrete variables.