Answer:
The Option A. 3 is correct.
Step-by-step explanation:
The function is given to be :
![f(x)=\frac{1}{4}(\sqrt[3]{108} )^x](https://tex.z-dn.net/?f=f%28x%29%3D%5Cfrac%7B1%7D%7B4%7D%28%5Csqrt%5B3%5D%7B108%7D%20%29%5Ex)
Now, we need to simplify the above function in order to obtain the base simplified form of the given function f(x)

Hence, the base simplified form of the given function f(x) is 3
Therefore, The Option A. 3 is correct.