Name the property of real numbers illustrated by the following equation 4.5 + 9.8 + 1.5 + 3.2= (4.5 + 1.5) + ( 9.8 + 3.2) i need some

The answer is the Associative Property of addition.
Associative property of real numbers is related to how we use the parenthesis in the expression while adding or multiplying, we always get the same answer.
like a + b + c = (a + b) + c = a + (b + c)
The given equation is 4.5 + 9.8 +1.5 + 3.2 = (4.5 + 9.8) + (1.5 + 3.2) = (4.5 + 1.5) + (9.8 + 3.2)

The correct answer is: b