Answer:
c. mean and standard deviation.
Step-by-step explanation:
You respond to your friend saying that, in this case, it is best to report the mean and standard deviation. The mean will provide the best representation of the average based on the data that is provided. Meaning that response time that occurs the most often from all the data that was provided. While the standard deviation tells us, by how much the rest of the data is separated from the calculated average value.