What is the value represented by the letter c on the box plot of data? {80,18,34,80,59,67,12,55}

C is the median.

to find the median we need to put all the numbers given in order from smaller to largest

12, 18, 34, 55, 59, 67, 80, 80

then find the middle number of these

well we have to middle numbers 59 and 55

so we need to find the mid number between these two which 57.

The answer to this question is 57

hope this helped