Final answer:
To use the associative property to rewrite the expression 3 + (-6 + 7), we can regroup the numbers as in option c) (3 + 7) + (-6), which correctly applies the associative property of addition.
Step-by-step explanation:
The associative property in mathematics allows you to rewrite expressions by regrouping the numbers without changing the outcome of the sum. To rewrite the expression 3 + (-6 + 7) using the associative property, we can change the grouping of the numbers. Option c) (3 + 7) + (-6) uses the associative property correctly by regrouping the numbers.
The Associative Property of Addition example is (a + b) + c = a + (b + c).