Final answer:
The commutative property of addition states that the order of adding numbers does not change the sum.
Step-by-step explanation:
The commutative property of addition states that the order of adding numbers does not change the sum. In other words, the numbers can be added in any order and still yield the same result.
Out of the options given, 17+4= 4+17 best illustrates the commutative property of addition. No matter which order we add the numbers in, the sum remains the same, which is 21 in this case.
The other options do not illustrate the commutative property as they either involve subtraction (17+-17=0) or involve adding zero (17+0=17).
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