I think the answer is A.
So, when you are first given a set of data, order the numbers from least to greatest:
3, 4, 4, 5, 5, 5, 6, 6, 6, 8, 8, 8, 8, 9, 10, 10
Now we have to find the median...
3, 4, 4, 5, 5, 5, 6, (6, 6) 8, 8, 8, 8, 9, 10, 10
There is an even amount, so we have to add the 2 numbers in the middle and then divide by 2 to get the median. 6 + 6 = 12 /2 = 6
6 is the median. Now we have to find our minimum, maximum, and quartiles.
(3, 4, 4, (5, 5), 5, 6, 6) (6, 8, 8, (8, 8), 9, 10, 10)
Min= 3 , 1st quartile = 5, 2nd Quartile ( Median ) = 6 , 3rd Quartile = 8, Maximum = 10.
So you would plot the dots and connect the lines and make the box!
Hope this helps!