The statement you've provided is an example of the Associative Property.
The associative property states that the way numbers are grouped in addition or multiplication does not change their sum or product. In this case, the grouping of the terms in the expression \((-5 + (13 + 11))\) and \((( -5 + 13) + 11)\) shows this property.
So, the correct answer is:
D. Associative