Help me with this quit ion I asked a little bit ago and no response!

Answer:
(A) 4
Step-by-step explanation: The mean is all the numbers added divided by the amount of numbers. so 2 + 3+ 6 + 5 = 16 then you add the 4 that is 20 then divide 20 by 5 and if the answer is 4 its correct. The answer is 4 so its correct.