27) Which property of addition is used in the following? (3+8)+7=3+(8+7) A. Distributive Property B. Commutative Property C. Associative Property D. Identity Property 2

The correct answer is C. Associative Property.<br /><br />The Associative Property of addition states that the way in which numbers are grouped does not affect the sum. In other words, when adding three or more numbers, the sum remains the same regardless of how the numbers are grouped.<br /><br />In the given equation, $(3+8)+7=3+(8+7)$, the numbers are being grouped differently, but the sum remains the same. This demonstrates the Associative Property of addition.<br /><br />The Distributive Property, option A, involves multiplying a number by a sum or difference, and then distributing the multiplication to each term. This property is not relevant to the given equation.<br /><br />The Commutative Property, option B, states that the order of the addends does not affect the sum. This property is not relevant to the given equation, as the order of the addends is not being changed.<br /><br />The Identity Property, option D, states that adding zero to any number does not change the value of that number. This property is not relevant to the given equation, as zero is not being added.<br /><br />Therefore, the correct answer is C. Associative Property.