Final answer:
The commutative property of addition allows you to rearrange the order of numbers without changing the result.
Step-by-step explanation:
The commutative property of addition states that the order in which numbers are added does not affect the sum.
This means that you can rearrange the order of the numbers without changing the result. In the equation, 16 + y, you can use the commutative property to write an equivalent expression as y + 16.
So, the correct answer is option b.