The answer would be B, 37.
Explanation~
20,21,|24|,25,28,|29|,25,36,|37|,43,44
Each quartile is in a box, to find the quartile you have to put the numbers from least to greatest and find the median. Which I boxed, then you look at the first half since it’s divided into two halves basically and find the median then you do the same to the other side. That’s how I got my answer but I don’t know if I messed up on anything, tried to help tho..