Identify the equivalent expression of 9xy²z

 

The correct answer is: 9y²zx

Equivalent expressions are those expressions which will work the same means they will give the same result by they may not look similar.
In the given expression of  the ordering is as follows,
The highest exponent of  is  and the highest exponent of  is  and the highest exponent of  is .
The option which will have similar feature will be the equivalent expression.
So, the expression  is the similar expression.