Indicate which property is illustrated in Step 2.
Step 1 7 + (1 + 7) + 0 = 7 + (7 + 1) + 0
Step 2 = (7 + 7) + (1 + 0)
Step 3 = (7 + 7) + 1
Step 4 = 14 + 1
A.
commutative property of multiplication
B.
identity property of addition
C.
distributive property
D.
associative property of addition