For this case, we use a generic expression given by:
[tex]a * b = c\\[/tex]
The commutative property establishes that the order of the factors does not alter the product, that is, the previous expression can be written as:
[tex]b * a = c\\[/tex]
Thus, the commutative of [tex]5 * 6 = 30[/tex] is given by:
[tex]6 * 5 = 30\\[/tex]
Answer:
Option c