Answer: b. Median
Step-by-step explanation:
The most common measures of central tendency are :
a. Mode - It is used in nominal data.
b. Median - It is used as central tendency when data is skewed or having outliers in the data.
c. Mean - It is the best measure of central tendency when data does not have outliers because it affect mean badly.
Given, Prices of item have a skewed distribution with outliers in the left tail.
That means , the best measure of central tendency to summarize this data set is median.
So, the correct option is b.