Which one of the following is a rule of multiplication? the product of a whole number and 1 is never the same whole number. the product of a whole number and zero is the same whole number. the way you group numbers in a series of multiplication problems doesn’t change the final product. the order in which you multiply two whole numbers changes the product.

The answer would be C.) The way you group numbers in a series of multiplication problems doesn't change the final product.
A. is invalid because any whole number x 1 would be that whole number as the product.
B. Is invalid because any number x 0 will be 0.
D. is invalid because you can multiply in any way as long as the number's value (example, 1 turning into -1 without any multiplication of -1) does not change during the process.