Answer: 7 (choice B)
Step-by-step explanation:
First we need to sort the values from smallest to largest. Doing so gets us this list
5,6,6,7,8,9,10
Don't toss out the duplicates.
There are n = 7 items in this list. The midpoint will happen at slot n/2 = 7/2 = 3.5 = 4
The value in the fourth slot is 7, so this is the median. Note how 5,6,6 are below the median and 8,9,10 are above the median. We have an equal number of items below and above the median.