Which property is demonstrated in the equation below?
(ab)c = c(ab)
commutative property of multiplication
associative property of multiplication
associative property of addition
multiplicative identit

This would be called Associative Property of Multiplication. 

The associative property states that you can add or multiply regardless of how the numbers are grouped.

your welcome!
=)

The commutative propert tells yo can change order of multiplication without affecting the result it is ab=ba or something like that

associative is you can change order of multiplication but it doesn't matter (since parenthases first comes first in PEMDAS or GEMDAS, that changes the order) normally written as a(bc)=(ab)c

I would say that this is the commutative property since if you immagine that ab=d, then we can rewrite as
(d)c=c(d)
the order changes

answer is Commutative property of multiplication