Answer:
The answer is D.
Explanation:
1,2,6,9,10,10,11,13,15,15,15
The Median (the middle) is 10.
The Mean (add all the numbers, then divide by how many numbers there are) is 9.7
The Mode (the one that appears the most) is 15
Therefore, the answer is D.
I hope this helps and have a great day!