Answer: A. recording amounts of chemicals used in an experiment and any temperature changes observed
Explanation:
A quantitative data is the one which can be calculated or measured. It exhibit a quantity, amount or range. For example height of a person is a quantitative data it can be expressed in units such as meters (m) or centimeters (cms.).
A. recording amounts of chemicals used in an experiment and any temperature changes observed. is the example of the quantitative data. This is due to the fact that amounts of chemicals, changes in the temperatures can be measured and calculated in an experiment.
