Final answer:
Data set A is the most spread out.
Step-by-step explanation:
The standard deviation is a measure of how spread out the data values are from the mean. In this case, the data set with the highest standard deviation is the most spread out. Looking at the given standard deviations, we can see that the highest value is for Data set A, with a standard deviation of 6.06. Therefore, Data set A is the most spread out.