Option A.
is the correct radical form.
Explanation:
Step 1:
The numerator of the exponential is kept where it is whereas when converting an exponential into a radical, the denominator becomes the root of the variable.
The numerator of the exponential is 2 while the denominator is 5.
Step 2:
So the numerator is kept where it is while the denominator, 5 becomes the root of the variable.
Out of the given options, options 2, 3 and 4 have square roots so they cannot be the answers. Option 1 has a root to the power of 5, so it is the correct radical form.
So option 1 is the right answer.