The expression \( x^{16} \cdot x^{16} \) can be simplified using the properties of exponents. Specifically, when multiplying two expressions with the same base, you can add the exponents:
\[ x^{16} \cdot x^{16} = x^{16 + 16} = x^{32} \]
Now, we need to express \( x^{32} \) using the options provided.
From the options given:
- \( \frac{1}{\sqrt[3]{\sqrt{x}}} \)
- \( \sqrt[36]{x} \)
- \( \sqrt{x} \)
- \( \sqrt[3]{x} \)
None of the responses seem to directly represent \( x^{32} \).
Instead, let's assess the expression:
\[ \sqrt{x} = x^{1/2}, \quad \sqrt[3]{x} = x^{1/3}, \quad \sqrt[36]{x} = x^{1/36} \]
Since none of these options equal to \( x^{32} \), it appears there might have been an issue with the listed choices.
However, strictly based on the format of the existing responses, \( x^{32} \) would not match any presented options and thus, none should be selected as equivalent.
Please provide further clarification or additional options if needed.