To solve this, we are going to use the formula for fractional exponents:
![a^{ (m)/(n) }= \sqrt[n]{a^m}](https://img.qammunity.org/2019/formulas/mathematics/middle-school/29weozs1brtyxq1tlt6z6m4jt8k3k8d0bm.png)
We want to write the expression

as a radical. We can infer from our expression that

,

, and

, so lets replace those values in our formula:
![a^{ (m)/(n) }= \sqrt[n]{a^m}](https://img.qammunity.org/2019/formulas/mathematics/middle-school/29weozs1brtyxq1tlt6z6m4jt8k3k8d0bm.png)
We can conclude that the correct answer is: ![\sqrt[5]{2^3}](https://img.qammunity.org/2019/formulas/mathematics/middle-school/jugzbnv0pjf1n60fh9prd2yv0yhy7qs8dk.png)