Final answer:
The color of a flower, which is c) in the provided options, is an example of qualitative data because it describes a characteristic without using numbers.
Step-by-step explanation:
An example of qualitative data is c) The color of a flower. Qualitative data includes categories or descriptions that do not rely on numerical values but rather the characteristics or qualities of a subject. For instance, describing something as yellow or heavy is qualitative, whereas a numerical measurement like temperature or weight in grams is considered quantitative data. Other examples of qualitative data include hair color, blood type, and the type of car a person drives. Given options a), b), and d) focus on units and numbers, they are examples of quantitative data.
Qualitative observations are important in science because they describe properties or occurrences in ways that do not involve counting or measuring, and thus are suited to capturing the essence of what is being observed in a non-numeric form. Understanding the difference between qualitative and quantitative is crucial for data analysis and scientific investigation.