First, let's expand the inside expression.
4th root [ x^4 * x^4 * x^2 ]
Then, we need to determine how many x^4s we can take the 4th root of. In this case, that is 2. So, the 4th root of x^4 is x.
x * x is x^2
ANSWER: x^2( 4th root [ x^2 ] )
(Option 1)
Hope this helps!