Step 1 :The divisibility rule for 9 states that a number is divisible by 9 if and only if the sum of its digits is divisible by 9. Therefore, to determine whether 21,272 is divisible by 9, we need to calculate the sum of its digits and check whether this sum is divisible by 9.
Step 2 :Calculate the sum of the digits of 21,272: \(2+1+2+7+2=14\)
Step 3 :Check if the sum of the digits, 14, is divisible by 9. It is not.
Step 4 :Final Answer: \(\boxed{\text{D. No, because the sum of the digits is not divisible by 9}}\)