Function consists of the seven points shown in the graph. Image

What is the domain of the function?
A.
{0, 1, 2, 3}
B.
{-3, 0, 2, 3}
C.
{-3, -2, -2, 0, 1, 2, 3}
D.
{-2, -1, 0, 1, 2, 3, 4}

Dylan is evaluation the expression 13+19+7+10 at one step in his work, dylan rewrites the equation as 13+7+19+10 which property of addition must dylan have used when he evaluated the expression?