Answer: The answer is (D)
Step-by-step explanation: We are to select the correct monomial from the given options which is a perfect cube.
The first option is
So, this is not a perfect cube.
The second option is
So, this is not a perfect cube.
The third option is
So, this is not a perfect cube.
The fourth option is
So, this is a perfect cube.
Thus, (D) is the correct option.