When 9 2/3 is written in the simplest form, which value remains radical?

In mathematics, radical is term having a root. It can be square root or cube root.
The given radical in its simplest form is expressed as
[tex]\begin{gathered} 9^{\frac{2}{3}^{}} \\ \text{This can be written as} \\ (\sqrt[3]{9^{}})^2 \\ We\text{ can see that 9 is under the radical(cube root)} \end{gathered}[/tex]Therefore, the correct option is 9