Which of the following best illustrates a qualitative data type?

Customer satisfaction ratings exemplify qualitative data because they represent subjective measures of customer experiences and feelings, which cannot be quantified with precise numerical values. Instead, they often involve opinions and perceptions that reflect how customers feel about a product or service. This data type is often collected through surveys or interviews, where respondents provide feedback in the form of words or descriptions rather than mere numerical figures.

In contrast, the other choices represent quantitative data types, which are numerical and can be measured precisely. The number of units sold, market share percentage, and revenue generated all provide clear, quantifiable information that can be expressed in numbers. They allow for statistical analysis and comparisons, which are integral to quantitative research. These types of data are fundamental for measuring performance and making data-driven business decisions.