The best measure of center for the given histogram is: B) median.
The median is the middle value of a dataset when it is written in order. For a symmetric histogram like the one given, the median is the same as the mean.
The other options are not the best measures of center:
Mean: As mentioned earlier, the mean would be pulled towards the higher scores due to the skewness, making it less representative of the typical student's score.
Interquartile Range (IQR): The IQR is a measure of spread and does not provide information about the center of the data.
Mean Absolute Deviation (MAD): The MAD is also a measure of spread and does not provide information about the center of the data.
However, the median is a more robust measure of center than the mean, as it is not affected by outliers. Therefore, the median is the best measure of center for this histogram.