Concept:The median is the middle value of an ordered data set. For an even number of observations, the median is the average of the two middle values.Explanation:Arrange the 10 scores in ascending order.12,19,24,39,45,51,54,67,75,81Since n=10 is even, the median lies between the 5th and 6th terms.The two middle values are 45 and 51.Median =245+51=296=48Answer:48Correct option: B. 48