Which of the following represents a qualitative variable?

A qualitative variable is a type of variable that describes characteristics or qualities that cannot be measured numerically. Instead, it categorizes data based on attributes or properties.

The color of a truck is an example of a qualitative variable because it represents a characteristic that is descriptive in nature. Colors are categories that can be used to classify the trucks but do not have a numerical value associated with them.

In contrast, the weight of a package, annual revenue of the company, and the number of deliveries are all quantitative variables. They represent measurable quantities that can be expressed in numerical terms, allowing for mathematical operations and analysis. Thus, identifying a qualitative variable as the color of a truck is accurate, as it categorizes a truck based on its features rather than a measurable metric.