Which of the following shows the Commutative Property of Multiplication?

A. a×1=a
B. a×(b×c)=(a×b)×c
C. a×b=b×a
D. a×(-1)=-a

C. a×b=b×a

The correct answer is option C. a×b=b×a. This equation demonstrates the commutative property of multiplication, which states that the order of the numbers being multiplied does not affect the result.