Answer:
The correct option is (c)
Justin is working with continuous quantitative type of data.
Explanation:
We are given that Justin is collecting data on reaction time.
The reaction time is obtained through measurements and it can take any value within a range therefore, it falls in the category of continuous data.
Moreover, since reaction time can be measured thus have numerical value therefore, it is a quantitative type of data.
Therefore, we can conclude that Justin is working with continuous quantitative type of data.
Other examples of continuous quantitative type of data are
measuring height
measuring temperature