A. (-16)^¼ :
![( - 16) { }^{ (1)/(4) } = \sqrt[4]{( - 16)}](https://img.qammunity.org/2021/formulas/mathematics/high-school/smc97k5mvndpgvhgf4g4irkk0pc86gyoqk.png)
It's stuck at here
So, the choice A is False ❌
B. (-4)^½ :
![{( - 4)}^{ (1)/(2) } = \sqrt[2]{( - 4)}](https://img.qammunity.org/2021/formulas/mathematics/high-school/yje41floaf1kkln9rsw5hpc9w8a8tg150v.png)
Stuck at here too
So, the choice B is False ❌
C. (-32)^1/5 :
![{( - 32)}^{ (1)/(5) } = \sqrt[5]{( - 32)} = - 2](https://img.qammunity.org/2021/formulas/mathematics/high-school/ke6d2dpsaa80t83viiy7iev9gpszi7rfku.png)
The result is -2. It's real number
So, the choice C is True ✔️
D. (-8)^⅓ :
![{( - 8)}^{ (1)/(3) } = \sqrt[3]{( - 8)} = - 2](https://img.qammunity.org/2021/formulas/mathematics/high-school/89zyswm7w5yhg8lpkcdrrt89x6u8mak3ag.png)
The result is -2. It's real number too
So, the choice D is True ✔️
So, the choices are real numbers is C and D
Hope it helpful and useful :)