Answer:
7
Step-by-step explanation:
As there are 7 numbers 6. 12, 7, 5, 11. 6 and 9.
We rearrange
5, 6. 6, 7, 9, 11, 12.
7 is the 4th number in the data set = middle number of 7
As there are 7 numbers.
it should be D