Which property is shown? (mn)5 = m5n5
a. product of powers property
b. power of a product property
c. power of a quotient property

In this item, we are asked to identify which among the given choices is a property that is being shown by the equation,
 
                         (mn)⁵ = m⁵n⁵

It can be observed that m and n are multiplied to each other, inside the parentheses for the expression written on the left side of the equation. Also in the right hand side of the equation, 5 which is the power, is distributed to the elements m and n. 

The property that is being depicted in this number is the power of a product property. Thus, the answer to this item is letter B.