I was doing a practice new SAT Test and was wondering exactly what this question is asking and how it got to the answer. Thanks!

I was doing a practice new SAT Test and was wondering exactly what this question is asking and how it got to the answer. Thanks!

The histogram represents $2 + 0 + 4 + 1 + 2 + 0 + 3 = 12$ apples in total. Two of them have three seeds, none with four, and so forth. Thus, to find the average, we must evaluate the sum of the seeds divided by the number of apples. Can you do the rest?