Hello there. To solve this question, we have to remember some properties about notations.
Given the number

We want to determine its correct representation amongst the options.
For this, remember the fractional power notation:
![a^{(m)/(n)}=\sqrt[n]{a^m}](https://img.qammunity.org/2023/formulas/mathematics/high-school/23zqn928wq9auso71vn2158y1q9ykcf1se.png)
In this case, m = 1 and n = 4, hence
![7^{(1)/(4)}=\sqrt[4]{7}](https://img.qammunity.org/2023/formulas/mathematics/high-school/qo68b6zqzt8n39zvx2pkumabw0sv7dgwgl.png)
This is the answer contained in the second option.