Final answer:
The inverse of a perfect square is the exponent number.
Step-by-step explanation:
The true statement that refers to exponents and square/cubed roots is option B) The inverse of a perfect square is the exponent number.
To understand this statement, let's first define what a perfect square is. A perfect square is a number that can be expressed as the product of an integer and itself. For example, 9 is a perfect square because it can be expressed as 3 x 3. Now, the inverse of a perfect square is the square root of that number. So, if we take the square root of 9, we get 3. And 3 is the exponent number in this case.