Quantitative data in scientific investigations are numbers usually followed by units. The first option is the correct one.
What are quantitative data?
In relation to scientific investigation, quantitative data are attributes that are measurable or quantifiable. Thus, they can be assigned numerical values.
Because of the measurability, variables within quantitative data usually have units attached to them.
For example, height is measured in meters, feet, centimeters, etc.
Quantitative data is opposed to qualitative data because the latter cannot be assigned a numerical value.
More on quantitative data can be found here: https://brainly.com/question/96076
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