Concept:Quantitative data is numerical and can be classified based on whether it takes any value in a range or only separate whole values.
Explanation:Quantitative data exists in two forms: continuous and discrete.
Continuous data can take any value within a range, such as height or time.
Discrete data can take only specific separate values, such as the number of students in a class.
Nominal and ordinal forms describe qualitative or categorical data, not quantitative data.
Therefore, the correct classification includes both continuous and discrete forms.
Answer:B. continuous and discrete forms